Okay, they say a bare minimum for an unequivocal positive on 14dpo is an hcg of 100. Given that hcg doubles every 48 hrs, it would have been 50 at 12dpo, 25 at 10dpo, etc.
I was bfn at 10dpo with a FRER, and a light positive at 11dpo. I know you've picked up a hcg of just 5 on FRER, so I guess my hcg at 10dpo was no where near 25!!! Averages are just averages. HCG was only 82 at 14dpo.