Three weeks ago I missed three birth control pills in one week, the second week of the pack. I did as the package directed and started a new pack on Sunday, which made me "skip" a period (the inactive pills). About six pills after I started the new pack I had unprotected sex, however no semen was released into me. Now, after taking the pill exactly on time every day, yesterday I experienced a watery brown discharge mixed with red (didn't spot much but I could see it when I cleaned myself) and today it's primarily red. Along with this I've been having cramps very similar to period cramps. I've had no other pregnancy like symptoms (ie, fatigue or breast tenderness) and I've experienced breakthrough bleeding before.