Yes. Anytime you change your normal routine while using hormonal Birth Control, breakthrough bleeding or spotting can occur. Depending on how many pills you took, it may last into your next period or may stop after just a few days - either would be considered a normal side effect.
Your period will come naturally. Birth control does not help you get your period. Your body decides when you will get your period.
There's no need to wait.
Yes, 4 days of birth control can cause an irregular period as the birth control messes up your hormones and throws your body's natural rhythm out of whack.
Continue taking your birth control pills as scheduled.
regular
Yes
A three-day period may be your new normal, may be a fluke due to recently stopping birth control, or may be due to pregnancy. Take a pregnancy test.
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.
I stopped taking my birth control in December and in January I came on my period but in february I didnt come is this normal
You should continue taking the birth control pill daily as scheduled regardless of bleeding.
Yes, it is possible for your period to be late or stop completely from any hormonal birth control.
If your on birth control you don't actually get a period its actually withdrawal bleeding which looks the same as a period. Sex wont effect this cycle.