Do you think I’m pregnant?

Hi! I took a digital pregnancy test in the morning 6 to 7 days after conception (we only tried two days so it has to be one of those days) and got a positive. Then later that day took a line test and it showed negative. Then I waited 2 more days and saw a very faint line that could barely been seen as a positive (more clearly with flash). Do you think the first positive test I got was a false?

I hope that I’m actually preggo!