Hi Jenn, that must be very confusing, hope things work out with a proper positive in the next few days
I would be cautious of any bfp that happens after the given time that the test should be read within, i have been caught out by evaps but only on IC's, never had an evap on a frer for eg
If it was a bfp, and there is a low hcg thats currently building, your negative could have been dilute wee, so you certainly arent out unless af arrives.
when will you test again, and what tests were you using?
good luck!