I took a one step pregnancy test, 3 days before my expected period using my fist urine sample of the morning. I was sleepy and glanced at it and thought it said negative because the vertical line was showing.
I woke up 2-3 hours later and I saw a very faint horizontal line ( making it look positive). However, the instuctions say to discard test 10 minutes after taking the urine sample. Is this true and would it be too soon to take another test the next day or should I wait to see if I miss my period?