I'm 17 years old, and about a month and a half ago i started using yaz. And shortly after being put on it, i had sex for the first time. Lately i've been having lower abdomen pain during sex, and spotting between periods. I don't know if my bodys jjust adjusting to the hormones or whats wrong. I know ive been fatigue and have headaches and that can be caused from the birth control. But can anybody help me out?