So I'm 17 years old and currently on birth control, I had sex with this guy, we used a condom, but i later found out if fell off during intercourse and found the condom in me the next day. I wasn't too concerned because i am on birth control and he didn't ejaculate, but I'm still a bit worried. So the day after i found the condom i still had two pills left for my birth control when i stared spotting, iv been having light pink, super light menstration for the past three days. My regular periods are usually a normal flow and last about four days. Any idea whats going on? Im really confused...