I'm a 15 yr old on continuous birth control pills due to extremely heavy & painful periods. I have not had any issues for 2 packets or 6 months. This is my third packet and i have been experiencing constant spotting for around 2 months. I'm anemic, but it hasn't been heavy enough to bother me most days. My lower back has been sore, but i have not experienced any other pain. I have tried to find reasons of why this may be happening, but everything leads me to fibroids, which I think would be rare for a 15 yr old. I have experienced hormonal issues, in breast size, emotions, & periods. I know its not normal to bleed for 2 months, but have no idea whats going on?