I miscarried at 6 weeks on 9/30. Bleeding lasted four days and on 10/3 HCG was at 600 from 2100 on 9/29. So they were dropping fast. By my next dr appointment on 10/11 tests was negative and dr said my HCG was definitely under 5, most likely 0. I started getting positive opks on 10/12 along with cramps, egg white cervical mucus, and increased sex drive. If I track my MC as a period in the apps it shows ovulation as 11-14 or so. I am still getting pretty dark opk lines today. They don't seem to be fading like I thought they would. How many days is it normal to get a positive opk? Is it possible I'm really not ovulating despite other signs? I've always been very regular.