Any insight?

I test with FRER at 8DPO and got a faint line (decent enough to show up in a photo), I was pretty shocked at having one so early... anyways, I tested again today (10DPO) with FMU and it was very faint (more so than the first) so I tried again with SMU and, although it was darker than the FMU, it was still lighter than my original test at 8DPO.

Yes I know, stop testing. I go for blood work tomorrow and again Friday.

Has this happened to anyone and if so, what was your outcome?

Thank you!