Ok, I've been on birth control for 4 months now and I have a period every 3-4 weeks apart. I start my period anywhere from the 25th to the 8th of the next month. And I started on the 24th of Febuary and it went all the way to the 3rd of March. Then on the 17th, (2 weeks later) I wipe and notice a brownish pinkish color. I for sure thought that I was pregnate. For the first 2 days it was only really when I wiped and then it got redder and it started bleeding through to my pants, but not as much as my normal period, and now it's been going on for a week. I'm confused. Someone please help. I'm a confused 16 year old with no mom to talk to.