CMV negative

Hi. I had a CMV scare with my 2nd baby, turned out it wasn’t but it was a scary two weeks that have stuck with me. My doctor this time round said I could have screening to see if I have antibodies so I didn’t have to worry. My bloods have come back I don’t have any antibodies, I’m now so stressed 😭 has anyone been through similar? I thought most adults have antibodies by now