Early in pregnancy, i was feeling very tired and nauseous for about a week. Then, one day i experienced very heavy vaginal bleeding (heavier than a normal period, no noticeable masses) and the next day I felt better. I assumed I'd had a miscarriage with such heavy bleeding, but I'm still getting positive home pregnancy tests and it's been a week. Is it possible that I am still pregnant? How long after a miscarriage could I still be getting positive pregnancy tests?