xxx
Wow that is truly bizarre, seems almost like the tests are faulty. Did you use the same brand again? If the frer says negative then I'd be more inclined to believe that. I've had frer show lines with a hcg of 8 before (leftover hcg from a mc) so they'd deffo show low levels. Unless you pee was too diluted maybe? So confusing, hope you can work this out soon.
I don't think cancer or cyst hun. In the case of cancer (choriocarcinoma, PGTD, PST) the tumour gives off hcg, which would rise and maybe seem like a progressing pregnancy, until a scan proved otherwise. I get screened twice a year for it (and after each pregnancy) as I had chemo in the past for PGTD. Can't comment on a cyst, but whenever I've had them they have not produced any fluctuation in my hcg levels xx