Blood Test

I am 9 DPO, I have took 4 tests with faint lines on all of them. I went and had blood work done yesterday and they said its inconclusive and to come back tomorrow. As this happened to anyone. I have had blood work and they say its negative but never inconclusive. My mom told me that happened when she was pregnant with me and she went back and it came back positive. I am just worrying.