Had unprotected sex 12 days ago...according to the flo app I had ovulated 4 days earlier however I had slight cramps on the left side which I get when I'm ovulating on the day I had sex with my partner. 3 days after this, I was very gassy and have been till yesterday, sore breasts, on and off nausea and pretty tired. Also have had very light spotting 4 days post sex which lasted for about 7 days. Period was due 3 days ago but no sign however took a pregnancy test today and its negative. Have I just got my hopes up or is it possible im positive ?