Birth Control methods

20 Birth Control Side Effects Every Woman Should Know

We asked doctors to break down the possible side effects of different types of birth control so you know what to expect.

While birth control may keep you pregnancy-free, it often causes changes to your body. While some can be positive (Lighter periods and clearer skin? Yes, please.), there are plenty of birth control side effects that are more complicated. No method of birth control is perfect, so we asked MD’s to break down the most common potential side effects associated with different types of birth control. Evaluate the pros and cons with your health care provider—then you can make an educated decision about what’s best for you.

Side Effect 1: Lighter Period

“Taking estrogen in any form will likely make your period lighter and your skin better,” says Nerys Benfield, MD, an assistant professor in the department of obstetrics and gynecology and women’s health at the Montefiore Medical Center Albert Einstein College of Medicine. So that includes any form of hormonal birth control including the birth control pill, the ring, hormonal intrauterine device (or IUD), the patch, and the implant.

Side Effect 2: Breast Tenderness

Breast tenderness is a common symptom for those taking hormonal birth control, especially within the first few weeks of starting it. What’s not normal? Breast lumps or breast pain—if you’re experiencing either, talk to your doctor.

Side Effect 3: Breast Enlargement

When you first start taking estrogen and/or progestin, you’re likely to retain fluids during your first few menstrual cycles, which can cause your breasts to be temporarily larger. The effect will subside in time, or when you stop taking the hormonal birth control.

Side Effect 4: Clearer Skin

“Taking estrogen in any form will likely make your skin better,” says Dr. Benfield. Estrogen keeps acne-causing sebum at bay, giving you clearer, healthier skin.

Side Effect 5: Headaches

Any fluctuation in hormones can cause headaches. During your period, your hormone levels are in constant flux. For that reason, your period may be causing headaches—including migraines. When you add hormonal birth control to the mix, this can exacerbate the headaches or reduce their frequency and/or pain. It all depends on your individual body. If you’re currently not on birth control and are experiencing headaches during menstruation, talk to your doctor to find out if hormonal birth control could help prevent them. On the flip side, if you’re happily headache-free, know that going on birth control can change that.

Side Effect 6: Weight Gain

Weight gain is most often associated with progestin-only pills (a.k.a. the mini pill) or the Depo-Provera shot. The Depo-Provera shot is administered every three months and has the highest dose of all the hormonal birth control options. Therefore, less desirable effects like weight gain are slightly more common. “Most women who use it will not gain weight, but if you are one of the women who does, you can find another method that’s better for you and your body,” says Dr. Benfield.

Side Effect 7: Missed Periods

Birth control can stop your period altogether, reduce its frequency, shorten its length, or lessen your flow. So don’t let a missed period freak you out. If your period disappears after getting an IUD for example, it’s likely normal. If you’re worried, talk to your doctor.

Side Effect 8: Less Cramps

Hormonal birth control including combination pills, NuvaRing, progestin implants, and the contraceptive patch can all help reduce painful menstrual cramps, given that they reduce your period’s frequency or halt it altogether.

Side Effect 9: Nausea

Taking estrogen pills can lead to nausea (which Dr. Benfield says will normally ease up over time). The higher the dose of estrogen in your birth control, the more likely you’ll experience nausea. Nausea is more common when you first start taking the pill and should subside within a few days.

Side Effect 10: Skin Irritation

Skin irritation can be par for the course if you use the patch as your birth control method. The patch is another form of hormonal birth control that is worn on your stomach, butt, back, or upper arm. Since it sticks directly to the skin, it’s possible for the adhesive to irritate your skin. “We do recommend that each week, you put the patch in a different place,” said Dr. Benfield. If irritation persists, talk to your doctor about switching to another brand of the patch or switching methods altogether.

Side Effect 11: Blood Clots

The birth control patch also puts you at a higher risk of blood clots than with other forms of birth control, according Alyssa Dweck, MD, an assistant clinical professor at the Mount Sinai School of Medicine. “It has a black-box warning [an FDA label that calls attention to serious or life-threatening risks], which can scare patients and practitioners alike, but it’s still a great form of birth control,” she says.

Blood clots are also a concern for smokers. Smokers are at high risk for blood clots, and taking birth control with estrogen can increase the risk of serious side effects. If you smoke and/or have a family history of blood clots or heart disease, talk to your doctor about other forms of birth control, like the progestin-only pill.

Side Effect 12: Cramping

Cramping is the main birth control side effect for IUD users. There is discomfort and cramping upon first insertion by your doctor, but on the plus side, you get protection for three to five years (depending on the type you choose). With the hormonal IUD, you will also likely get a lighter, less crampy period. “Eventually you might not have a period at all,” says Dr. Benfield. The hormonal IUD could also cause some of the other hormonal contraception side effects on this list (like breast tenderness and headaches), but there’s a smaller chance you’ll notice them than there is with oral contraceptives.

Side Effect 13: Discomfort During Intercourse

If you’re thinking about getting an IUD, you should also consider what it’s like to have sex once it’s been implanted. There are small strings on the bottom of the device that your partner might feel. “At first the strings are a little stiff, but they soften over time,” says Dr. Benfield. And if the strings continue to be disruptive to your sex life, you can always get them trimmed, she says.

Side Effect 14: Heavier Periods

The experience of living with the copper IUD is the same as the hormonal one (insertion cramping, discomfort during intercourse, etc.), but the major difference is that your period will get heavier for the first year. “After a year the period should be where it was before,” says Dr. Benfield. “But with those first couple of months, I always tell my patients to be prepared and have pads on hand.”

Side Effect 15: Red, Bumpy Rash and Irritation

Even condoms come with a side effect for those with latex allergies. “You’ll know within 20 to 30 minutes of using one if you have a latex allergy,” says Dr. Benfield. A red, bumpy rash will appear. And—get this—not only in the area where the condom has touched. “People would expect, ‘Oh, it’s going to be a rash where I put the condom,’ and that’s not necessarily the case. It can be anywhere on the body,” says Dr. Benfield. If an allergy presents itself, you can try polyurethane or natural condoms. The bells and whistles of some condoms on the market are also something to consider, says Dr. Dweck. She’s talking about vibrations, warming lubricant, spermicides—these things can cause irritations. “A plain condom with a separate water-soluble lubricant is always a safe choice,” she says.

Side Effect 16: Urinary Tract Infections

Urinary tract infections are a common side effect of diaphragms, especially for women who are already prone to UTIs. That being said, diaphragms are still a great female-controlled, nonhormonal barrier method when used properly. You’ll need to get fitted for one, and then you inserted it into the vagina just before intercourse.

Side Effect 17: Less Milk Production During Breastfeeding

If you’re nursing, it’s important to note that estrogen can dry up your milk supply. Dr. Dweck recommends considering progestin-only pills.

Side Effect 18: Hair Loss

Hair loss can occur when taking hormonal birth control, especially for people with a family history of baldness. Hair growth occurs in phases: an active phase (anagen), a transitional phase (catagen), and a resting phase (telogen). Hormonal birth control can cause the hair to enter or remain in the resting phase, which can cause hair loss.

Side Effect 19: Increased Vaginal Discharge

One of the side effects associated with the NuvaRing is increased vaginal discharge. The NuvaRing is a small plastic ring that you insert into the vagina each month; it releases the same combination of estrogen and progestin as the combo pill (but does it in a smaller dose and a bit more steadily). Of course, some people aren’t crazy about the idea of inserting something into their bodies. “There’s that group of women who just don’t feel comfortable with anything in the vagina,” says Dr. Dweck, “and it can also cause a little bit of vaginal drainage, so some people don’t love it for that reason.”

Side Effect 20: Soreness on Your Arm

The birth control implant is a progestin-only form of hormonal contraception that comes in the form of a flexible plastic rod (the size of a matchstick) that’s implanted beneath the skin. In addition to the progestin-related birth control side effects, you may also have soreness, swelling, and bruising on your arm at the implantation site for up to two weeks.

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