I miscarried for the first time. I was supposed to be 11 weeks and the baby measured 9 weeks with no heartbeat on our first ultrasound. I had a D&C on Aug. 19th. After my 4 week post op check the doctor told me my cervix was firm and I took a HPT that night it came back negative. One week later I tested again and it came back positive. I have since taken 11 HPT in one week and all have come back positive. I go in for a beta test tomorrow and another on Thursday. If I were to have a chemical pregnancy, would I still register positive on HPT and how soon would I start bleeding?