I had sex three times in one day with my boyfriend almost a month ago and that day only out of the other times we have had sex I have felt very odd about because we did it so much. We never use condoms and we have had sex a couple of times since then. The last time was about two days ago. My period is currently 4 days late. Honestly I might have miscalculated my last period because I lost all my information when I reset my phone so I'm just assuming when I stopped. I took two pregnancy test last night and both showed Not Pregnant. I used to ClearBlue brand. Any ideas? I'm stressing...