My dermatologist put me on Yaz for acne. I started the pills on what I thought was the first day of my period...but now I think it was only spotting. So I took the pills 4 days before my period actually started. THen when I did get my period it was very light for 3 days and now has been VERY heavy for 6 days. THis is very unusual for me. My period always lasted 4-5 days with a medium flow at most. It doesn't show any signs of stopping anytime soon either. SHould I be concerned about this long period? Could it be becuase I started the pills early? Why am I having such a long period? I'm still taking the pills, but I'm getting worried and I'm not so sure it's worth it. I haven't been on birth control for over 5 years since I had my tubes tied after my last child was born....this is purely for control acne and PMDD. Please give me your opinions...I'm quite worried. THank you so much.