Am I pregnant?

Em

This morning I took a first response early result pregnancy test.. after about 4 minutes I looked at the test and there was a very faint line... when I got home from work today, I decided to take another one to see if the line would be any darker, and I could barely tell if there was a line.. Has anyone else had this happen? I need help lol

Top test is this morning, bottom test was this evening.