Af due on 8/26

Tiara
Hi everyone, just curious I started my last period on 07/28 it lasted for 4 days which is kind of common because sometimes it do and sometimes it lasts 5 days, a few days later I was cramping feeling bloated all over again, so I thought it was just me getting ready to ovulate,so I had sex, on 8/11around the time I'm suppose to be ovulating I started spotting or having something like a light period for 3 days, but my next period isn't, due till 8/26. I took two pregnancy test one yesterday and one this morning both came back negative. I had this happened to me before but it only lasted 2 day's I think, but I to much didn't pay it no attention, but then aonth later I didn't have my period and found out I was pregnant, with my first born. I don't want to jump to conclusions because I don't want to be disappointed. Any feedback on this.