I took the clear blue (can use 4 days before you're period) test. The first one came out negative. I took the second one and also a negative (the box said the results show within two minutes). I wanted for the two Min's and still negative, i put the test down and left. I came back an hour or so later too throw it away and there was a very faint line making it a plus. Does this mean im pregnant? And should i trust it seeing as it was after the time provided?