Premom amazon preg cassette test

Has anyone used these tests? Are they reliable? How far along when you got a for sure positive?

Currently 9-10 dpo (pretty sure 9 if you o a day after peak) ... but got a bfn this morning. Than after a 2 hour hold got what appears to be a faint positive. Not sure if I should trust it . Please help. Also, let me know if you think it’s faint.

Pic taken at exactly 5 minutes.