I've taken pregnancy tests within the last 3 days, different brands and they've come out positive. I had a miscarriage 6 weeks ago and haven't had a period since. A couple of days before I miscarried, I had negative pregnancy tests. since then I was taking pregnancy tests to make sure that they weren't coming out positive. Then when I took the ones Friday, Saturday and today they've all come out positive. My hcg levels were really low when I was pregnant before I miscarried so I wouldn't thing that it would be leftover hcg.