December 18th is when my last period was, I cant figure out exactly when I am supposed to ovulate. Websites are telling me different dates. I think it was somewhere between the 1st and 4th, but I had a uti so couldn't attempt. Oh and normally my periods fall on the 6th through the 9th. And on the 16th I had 2 hpt come up postitive, but a blood test neg. I think I might have miscarried, but havent been able to get to the doctor. Any ideas? :?