Hi,Im 32 years old and on birth control. I had sex for the first in almost a year on January 4th we used a condom but it slipped off during intercourse, my boyfriend also pre ejaculates.. but full blow ejaculate that night. I got my period on the 7th and have been on it since. Their was a few days of peekaboo but since last week its been a constant very light period. (just to add, i did have sex on the peekaboo days thinking I was done with my period.) This has never happen to me before. Last month I did miss a birth control pill but doubled up the next day. I don't always take them at the exact same time every night either. Could this be the reason for the prolong period or should I be worried about something else?