What Are The Side Effects Of Birth Control Pills?

Written By Kirti Gaggar
Medically Reviewed By Dr. Sarah Momin, MBBS, D.G.O, Medical Registration No: 2019/04/2373
Last Updated: 09 July 2025
Read Time: 1 mins
Birth control pills are a small dose of hormones taken every day, for 21 days at a stretch, to prevent pregnancy. The hormones are a combination of the synthetic forms of estrogen and progesterone or only progesterone (called mini pill). Like other medications have side effects, so do birth control pills. There are no long term side effects of birth control pills. Not everyone experiences the side effects of Birth Control pills and most of them usually go away after two to three months. However, if the side effects are bothering you, it’s a good idea to re-visit your gynecologist to see if another form/type of birth control pill could be prescribed to you. Some of the most common side effects of birth control pills that one can experience are:
Spotting or breakthrough bleeding between periods (commonly experienced while taking progestin-only pills/mini pills or when taking pills for more than 21 days continuously)
Sore breasts
Nausea
Headaches
Weight gain
Mood changes
Missed periods (you may experience very light or missed periods)
Vaginal discharge
The above side effects may be experienced for a temporary period. Usually, they go away within a few months when you continue to take the pill. If this is not the case with you, then you should consult a doctor. Also, remember that if you stop taking the pill without starting a new method, it will no longer be effective in preventing pregnancy. 1 2
However, in the long term, there are some positive and some negative relationships between birth control pills and certain cancers. Taking combination birth control pills for a long period of time may decrease the risk of ovarian and colorectal cancer. Similarly taking any kind of birth control pill for a long time can decrease the risk of endometrial cancer. At the same time prolonged estrogen exposure in combination birth control pills can result in an increased risk of cervical and breast cancer. In both these cases however, the risk decreases to almost zero, ten years after stopping the use of birth control pills.
Birth control pills can affect everyone differently but you don’t have to navigate it alone. Chat with a gynecologist on the Pinky Promise app for just ₹99 and get guidance that’s right for your body.
References
1 - What are the disadvantages of the pill? ; From Planned Parenthood (https://www.plannedparenthood.org/learn/birth-control/birth-control-pill/what-are-the-disadvantages-of-the-pill). Retrieved on 25.02.2022
2 - 10 most common birth control pill side effects; From Medical News Today (https://www.medicalnewstoday.com/articles/290196). Retrieved on 25.02.2022
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