Hepatitis B 12 weeks pregnant. False positive ?

Talia

I wanted to get my ultrasound done and everything looked perfect heart rate was 156 baby was measuring perfectly and everything overall look very good. I I was waiting to get my blood drawn to find out the gender and my doctor came back to look for me and asked me if I knew I was hepatitis B positive I’ve gotten vaccinated so I really do think it’s a false positive so we retested. The results come back in a week but I’m very nervous and want to know if any of you ladies have gone through this. Did it affect your pregnancy? Did your baby come out OK?