Confused

Marlie

I took three pregnancy tests on cycle day 47 and 12 days late for scheduled period. All read positive. I have never been so late for my period before and have never had a positive test. Two days later I had full blown bleeding and went to emerge to see if I had a miscarriage. The doctor said it was too early to tell what was going on and I have a follow up appointment in a few days. Anyone have any thoughts of why I would get three positives and then bleed like my period?