Medical societies urge action to reduce gun violence. Patricia A. Lohr, MD and Mitchell D.
Jump to content. Top of the page Check Your Symptoms. Many women experience abnormal vaginal bleeding or spotting between periods sometime in their lives.
Birth control pills, patches, implants, injections and rings that contain hormones can cause abnormal vaginal bleeding as a side effect. This can occur:. It is important to check with a health care provider to determine the cause of abnormal vaginal bleeding. It may be due to one of the birth control issues above, which should be monitored.
Patient Information Handout. Millions of women in the United States use some type of hormonal contraception: combination oral contraceptive pills OCPsprogestin-only pills, medroxyprogesterone acetate injections, or subdermal levonorgestrel implants. Abnormal uterine bleeding is a common but rarely dangerous side effect of hormonal contraception.
Estrogen-free, progestin-only methods include progestin-only birth control pills sometimes called mini-pills or POPsthe birth control shot, the birth control implant, and the hormonal IUD Mirena. Estrogen helps to stabilize the lining of the uterus the endometrium. Spotting is more likely to happen if you have just started using a particular birth control method, while your body is adjusting.
When it comes to preventing pregnancies and treating certain other issueshormonal birth control is a very popular choice. Birth control options include:. Among these options, pills are the most common type of contraception used by sexually active women in the United States.
Changing hormone levels, most notably estrogen, and a thin endometrial lining can both cause breakthrough bleeding. Polycystic ovary syndrome PCOS is the most common endocrine disorder in women of childbearing age. This hormonal imbalance not only causes the aggravating symptoms of PCOS, but it can also lead to severe, long-term complications if left untreated. Birth control pills are commonly prescribed to women with PCOS to regulate menstrual cycles.
We respect your privacy. The cause is usually benign. Hormonal fluctuations that occur at the very beginning of your reproductive life cycle menarche, the onset of periods or toward the end menopause, when periods stop are often likely culprits.
Your birth control should be like a bodyguard, keeping threats such as unintended pregnancy, heavy bleeding, and painful periods as far from you as possible. But sometimes that very birth control is the cause of vaginal bleeding that happens outside of your period, which can completely take you and your underwear by surprise. The estrogen in combined forms of birth control prevents your ovaries from releasing eggs each month, while the progestin in BC thins out the lining of your uterus and thickens your cervical mucus to make it hard for sperm to swim to and fertilize an egg.