2 weeks ago, I found out I was pregnant. A week ago, when my period was due, I started to bleed so accepted it was a chemical miscarriage. This week, I feel nauseous and off certain foods. I took a test today out of curiosity to check my hcg levels and had a bfp even though I bled quite a lot during af. Could this just be a delay in my hcg levels returning to zero? I didn't think you could have a heavy bleed and still possibly be pregnant?