If you have just started taking Birth Control pills, then this can occur. Usually it can take a few months for your body to adjust to taking birth control. However, if you have been on birth control for a while I would recommend that you see your Doctor and consider changing to a different birth control as it may be more suitable for you.
Yup, very normal
Its not normal but it is common, are you taking birth control? could you have ovarian cysts? or could you be pregnant?
It is normal to have light periods or no period at all while birth control.
If you've stopped taking birth control then you will miss a period. Instead you will experience a withdrawal bleed 7-14 days after stopping birth control which resembles your normal period.
If you get back to a normal period you can get pregnant.
Yes, taking three birth control pills or taking the morning after pill can cause a missed period.
This is normal on the morning after pill but it is not normal on birth control, unless this is your first period on birth control then you may experience a lighter than normal period for you.
It is normal for many women not to have monthly breakthrough bleeding while taking Birth Control Pills.
You should start birth control on the first day of your period, otherwise your period will arrive on a new day & this will slightly change your cycle. If you DID start taking birth control pill during your period then this is why you're cramping and yes, birth control can cause abdominal cramping.
Anitbiotics will not effect your period but it may effect the effectiveness of birth control pills. Because of this, it's advisable that you use condoms for 2 weeks along with taking your birth control like normal to prevent pregnancy.