wondfo not getting darker?? false faint positive??

Hope
I got very faint "nearly non existent" shadows on wondfo and they dont seem to get darker!! I usualy have strong AF symptoms by now but i got none! I took another test brand yesterday and there was another pink faint line.
Wondfo couple of days ago.
Yesterday's other brand test.
Today's wondfo test.
Its looks like a bfn but when i really look ay it i see a pink shadow.
please help and tell me what do you think!! Did this ever happen to anyone?! *cry*