Hi I think AF is due tomorrow but took a superdrug test today as have been feeling sick on and off all day. (I know this could be completely unrelated) the instructions said to read the test within 3 minutes but after 4ish minutes a faint line started to appear. I'm just wondering if anyone else has had this? It was dipped for the correct amount of time ect and this didn't happen to the one I took 2 days ago (same brand). Should I just dismiss it? I only have 2 digital tests left now , which aren't as sensitive and no chance of getting any more for a few days. I'll try and attach some pictures.