The second week of June I had unprotected sex with my boyfriend. My period is now 14 days late. I had been extremely stress this past month so I feel like that may have delayed my period. I've taken two tests, one 5 days after my missed period and then took another test again after 10 days. Both have come back negative. I'm still pretty nervous about the whole thing, I just don't understand why my period still hasn't come. Could it be my cycle just working itself out and changing? SOS