why do you get your period on the pill

I am on the combined pill and have regular periods. If I happen to get pregnant while on, would I still have periods? I've had sickness, weird cravings and very bad mood swings, which I don't normally get. It is very unlikely that you would have any kind of vaginal bleeding during pregnancy, and in particular, regular. When you take the combined oral contraceptive pill, you do not in fact have a natural period, but something called a withdrawal bleed. This means is that the oestrogen-containing tablets that you take for 21 days are discontinued for the seven-day break (or for the seven days when you take a dummy pill containing no oestrogen). This causes the lining of the womb to break down because the oestrogen which maintains it has been withdrawn, and bleeding occurs. This does not happen when you are pregnant, because during pregnancy oestrogen levels rise to much higher levels than when you take the Pill so that no withdrawal of oestrogen occurs and no bleeding should take place.


Very occasionally some spotting does occur that coincides with your natural period time, although this is very unlikely to happen on a regular monthly basis. Other kinds of bleeding can occur due to, say, a
or to softening of the surface of the cervix, a condition known as a cervical erosion. If you have been experiencing sickness, cravings and bad mood swings whilst taking the combined pill, you should certainly make sure that pregnancy is not a possibility by having a. The chances of it being positive are very small indeed, but very occasionally a Pill failure does happen or if you have missed a day or two's Pills. Your symptoms are more likely to be due to some other cause. Amongst them, is a possibility because this certainly induces irritability and mood swings as well as cravings for sweet and carbohydrate-rich foods.


The oestrogen contained in a high-oestrogen pill can also cause nausea initially. Talk to your doctor about your symptoms, and have a pregnancy test for your own peace of mind. Last updated 14. 07. 2014 Dear Curious, You're on the right track. Birth control pills like Tri-cyclen use synthetic hormones to prevent ovulation andВ thicken the cervical mucus в both of which help keep sperm away from an egg and thus prevent pregnancy. Technically speaking, there's no need for menstruation if you're on the pill. However, most birth control packs contain placebo pills that cause monthly bleeding similar to a period. Here's how it works: Normally, a woman's menstrual cycle is regulated by the ebb and flow of several hormones. Each month, these hormones signal the uterus to grow an extra cushy lining to welcome a fertilized egg.


If fertilization doesn't occur, then the uterine lining, or endometrium, is shed as menstrual fluid. In a way, your period is the body's way of cleaning house to get ready for the next possible pregnancy. The hormones in birth control pills prevent ovulation and also stop the uterine lining from growing. So you ask, why do women still menstruate while taking the pill? The answer has to do with the history of birth control. In 1958, two doctors named John Rock and Gregory Pincus revolutionized contraception with the first clinical trials of oral contraceptives. Rock and Pincus decided that the pill would be more acceptable to women (and organizations like the Catholic Church) if it preserved women's natural menstrual cycle. So, they manufactured the pill to mimic a typical 28-day cycle. This is why many birth control packets contain three weeks worth of hormonal pills and one week of placebos or sugar pills.


Withdrawal from the hormones on the fourth week triggers bleeding that's similar to menstruation. However this "withdrawal bleeding" is usually shorter and lighter than a regular period because the uterine lining hasn't been thickened. According to many women's health experts, menstruation serves no biological purpose if a woman is on birth control. In fact, a woman can purposefully skip her period by omitting the placebo week and starting a new pack of pills, patch, or ring. Birth control manufacturers have caught onto some women's desire to have less frequent periods, and there are now several brands of the birth control pills on the market that don't have a placebo week. Check out for more information. Hopefully this info fed your curiosity and cleared up any confusion about the pill! Alice!

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