Faint positives to a negative test

I’ve taken about 4 tests in the past couple of days and they all came out super faint positive and one not as faint as before from the new first response 6 days sooner the one you can scan on your phone. Yesterday I got a 6 days sooner the older version it seems like and it came out negative this morning. I am super confused on what to do or if I should believe the positives tests or the negative. Will post two out of the 4 of the positive tests I had.. the fainter positive I got before the other one. Any suggestions on why this happened? I used first morning pee, and checked them at 3 minutes.