I lost my virginity on the 17th of september then my period came on the 19th. (protected)
I had sex again on the 7th of october (protected again), but only for a very short time then i came on my period again on the 19th.
The next month i started birth control bills on the 1st day of my period on the 19th and i was only on for 2/3 days, what could be the reason for this short period? had two periods since last had sex, is it due to the pill?