If by Birth Control you mean the pill (birth control being the name for all methods including condoms etc) it prevents a pregnancy occurring in the first place rather than stopping it once it has started.
You shouldn't be taking birth control if you're not prescribed it. Birth control pills don't stop periods, they stop pregnancy.
pregnancy
No. Birth control is intended to prevent pregnancy only. Birth control does not stop an existing pregnancy. It is not safe to take birth control while you are pregnant.
Most women will have their period within a week or two of stopping birth control pills, and may be fertile from the first day they stop taking it. If you have stopped taking birth control and have not had your regular period as expected, you need a pregnancy test to be sure whether you are pregnant or not.
Stop taking the birth control and take a test
Yes, birth control is an on going practice, to prevent pregnancy every day. Don't stop taking the pill, as directed by your doctor.
No, it does not stop pregnancy. You are still at risk if you do not use contraception.
It will stop ovulation & prevent pregnancy when you've been taking it for 4 weeks.
Well if you have taken a home-pregnancy test and it is positive then yes, you should stop. But you should not take the pregnancy test until at least the day of your expected period or 14 days after intercourse other wise your results will not likely be accurate. If you do get a positive pregnancy test then go ahead and stop taking your birth control and make an appointment with an OB/GYN. If the test is negative, continue taking your birth control pills until you do get a positive pregnancy test. If you stop taking it before you get the test results and it is negative, your chances of pregnancy are heightened greatly. But if you continue taking it until you get a positive test result, you will not have had enough to cause any harm to the baby.
It's possible to be pregnant, on birth control, and not know it. If so, you'll just stop the birth control when the pregnancy is discovered.
Just stop using it, but this may cause pregnancy.
If you've been off the birth control patch for five months, you no longer have protection against pregnancy. If you want to conceive, start taking a prenatal vitamin with folic acid. If not, see about starting another method.