I have polycystic ovarian syndrome so I never know whether or not I'm ovulating or not. This past year I've been pretty regular with my periods for once. Last month I had my period on the 15th and according to my period and ovulation tracker on my phone I should have been ovulating around the 28th or 29th. Me and my husband never use protection and we had sex on both the 26th and the 27th. This month I go my period early (on the 8th and ended the 11th) well a week later (on the 18th) I went to the bathroom and when I wiped there was blood (bright red in color)! I had to wipe a couple of times before it was gone. About 20 mins later I went to the bathroom again and there was more blood and then all of a sudden I had really sharp and then dull aching lower back pain. This pain lasted a full 24 hours. It was gone when I woke up the next morning. The only relief from the pain was to lay flat on my back. I know it's not pain from bending wrong or lifting heavy things because I hadn't been doing any of that. I guess my question is, since I had my period, could this still be implantation bleeding? Since I had my period, could this have possibly been the beginning of a miscarriage? I've been doing my own research online, but I can't seem to find any answers for any situations where these symptoms come so early after a period without any sexual contact in that week right after my period.