I had my son 8 weeks ago via csection. Me and my husband just had sex and I've been getting pos hpts different brands and boxes. They're all pretty dark now but when I go to a drs they say their urine test is neg. They did a blood test and that was neg. I started spotting 5 days ago which has been on and off like period bleeding (not like my mc in past) but im still getting positive hpts and im baffled