Nissa
I had this happen with my first two pregnancies I got a faint positive at home and went to the doctors to have a test and he told me I wasn't pregnant! Well I was and I have ds to prove it! The second time it happened again but different doctor so she sent me for a blood test and I was preggers! This time round I went through my obstertrician and just got a blood test done (smart man!) I have been told that HPT are able to pick up hcg earlier than drs ones as they are 50mul whereas hpt are from 10mul. I would definatley say you are pregnant and at least you have had the blood test to prove it!
Congrats!