I had unprotected sex and took my next birth control pill late the next day. I was worried that I might get pregnant so I took Plan B later that day. I know now that I didn't need to take Plan B but I didn't know then. I'm supposed to be on my period right now. Is it bad that I'm not having my period when my pills say I'm supposed to be?
It doesnt matter when you have sex in relationship to the time you took your pill. You're period is probably late because you put a huge amount of unnecessary hormones into your body. When you get all those hormones, it messes up your body. You may not get a period this month at all. Hormones lessen the lining of your uterus and this is what we shed as "bleeding".
You didnt have "unprotected sex", you were protected by your birth control pills. I dont know why you gals seem to think that Plan b and other ECP's are the be all and end all in contraception! They are not NEARLY as effective as regular birth control pills even if you take a late dose or even miss a dose! Everyone seems to think it is some magic potion that prevents all pregnancy when this is very far from the truth! Taking Plan b while already on birth control pills (and if you ever DO need back up, please DO NOT choose Plan b-use condoms) is not the best option. ECP's (emergency contraceptive pills) will alter your cycle. You can expect your period to be late. If you understand how birth control pills work and how ECP's work, you will understand why Plan b etc. is not the best option for back up. Birth control pills are designed to prevent ovulation. If there is no egg, there can be no baby no matter how many sperm are present-it just isnt possible. Women who are not on birth control release eggs and while that egg is released, there is about a 3 day window for fertility each month and that is it (unless you happen to ovulate twice in a month or kick out more than one egg at a time which does happen on occasion). Sperm live for about 3 days within a woman after a sexual episode. During this 3 days they "swim" up into the uterus and fallopian tubes trying to find an egg to fertilize and start a baby growing. If they dont find one, they all die out in about 3 days. ECP's are designed to delay ovulation so that hopefully ovulation can be delayed until all the sperm die out (but dont take this to mean if you take ECP's you are "good" for a few days to have unprotected sex, it doesnt work that way) Regular daily birth control pills PREVENT ovulation from occurring at all. If a woman misses a pill she has a chance to ovulate because of those missing hormones. The more pills she misses, the greater the chance for ovulation to occur. This is why a woman should use condoms for the next seven days as back up but generally if you miss just one and you make it up as soon as you remember you probably dont need to use condoms unless you want to be extra safe but missing any more than one, you should definitely use condoms for back up.. Being a few hours late on an occasional pill needs no back up-it wont make that much difference in effectiveness (so yes, you did not need back up protection and shouldnt have taken Plan b) Also, certain antibiotics reduce the effectiveness of oral contraceptives, including ECP's, so they are not a good choice to use for back up when you take antibiotics. So since ECP's delay ovulation, they are going to mess up and delay your cycle. At this point, just keep on taking your daily pills as they come and dont worry about your period. In the next cycle or maybe two, you will be back to your regular timing. No worries. It is not bad to even miss or skip a period. Some birth control pills are scheduled so that a woman has only 4 periods a year and some contraceptives stop periods altogether.
- Plan B Information for Consumers
- Plan B Information for Healthcare Professionals (includes dosage details)
- Side Effects of Plan B (detailed)
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