my niece is 18yo and had her last normal period 2/10 and some spotting around 3/10 (nothing since). she has had several positive pregnancy tests, a couple of them at clinics. anyway, last friday we went to what was suppose to be her first u/s at 9 1/2 weeks. they were unable to find anything in the uterus so she then had serial hcg blood draws in, which both were negative. she has always had 28 day normal cycles. the wierd thing is that yesterday after recieving the lab results we bought a hpt and it was still positive? she has a follow up appt with md tommorrow, but has anyone ever heard of that??