You were on birth control for 9 months and last month you stopped you usually got your period every month on the 19 or 20Now that im not on it anymore im late you took and pregnancy test and it said n?

Dear Reader; The typical human cycle follows the lunar calander rather then the twelve month calendar. You could be different, no problem with that. The body clock could be confused when periods are started and stopped by means of medication. Also your period could be irregular for a while. The tests available these days are very reliable and since the results showed negative, that probably is the case. I however am not in the place to have the final Word on that. Dwight Hello, Birth Control works by daily taking of a tablet containing contraceptive hormones which will "trick" your body into thinking its pregnant and by preventing your ovaries from releasing a egg (Ovulation). For the contraceptive pill to work accurately and thoroughly, you will need to build up the expected preventative doseage for you which consists of one pill being taken every day and no missing of pills. Once this has been achieved, you're protected against the likelihood of pregnancy. After you stop taking birth control, your body needs to "restart" itself into working without the influence of the birth control medication and the amount of hormones inside your body which the prevents pregnancy, need to decrease for the above to occur. It will take a full 3 months for birth control to be completely eradicated from your system and it can take up to 3 months for you to have a normal period. You will first experience a withdrawal bleed after stopping the pill. When you experience the withdrawal bleed which can consist of very light vaginal bleeding to normal or even heavier than usual vaginal bleeding, this means the hormones in your body are decreasing. Your period may arrive exactly 4 weeks after the withdrawal bleeding or even 2 weeks after the bleeding and sometimes as long as 6 weeks. If you previously had irregular periods before starting BCP, then you may return to your irregular cycle. The best thing to do is to use protection if you're not trying for a baby and to test for pregnancy every 4 weeks if your period fails to arrive. If you don't receive your period after a maximum of 6 months then speak to your Doctor. In a nut shell - If the hormones in your body decrease slowly it may take longer for you to have a period and if they decrease more faster than other Women, then your period may arrive earlier. Take care.