Help a lil confused

Angel

Hello all i have a few concerns. I had a miscarriage on Feb 1st I was 6 weeks 2 days along. I pasted everything I think at least it was everything on the 2nd. I had a bulg it went away but is now back has been for a few days now. I can feel it. My urine pregnancy test was neg on the 1st along with my blood hcg being very low but not 0. I took 2 tests today and one is a vvfp im not understanding why. Can someone give me some closer.