Vvvfl after couple hours ?

Bethany

Is it possible ?? For the last few days eveytime I take a pregnancy test I look within the 10 minute time frame and I can’t really see a second line but after a few hours I look again and there is the faintest line. ( I think I do anyway). So is it an indent or the start of something?? Also my last period was on the 13th December. Got doctors on monday Help x