Hi. I Had My Period August 6th Through August 9th

Hi. I had my period August 6th through August 9th as I was 3 days late on my period I was originally supposed to start August 3rd. My Periods are regular and occur every 25 days. I had sex before, during, and after ovulation and during my fertile days, now I've been having mood swings, been tired more often, frequent urination, appetite change, increased sex drive as my bf would be the one to always make first move I now have been here in the past week. My next period is supposed to start sunday. I've also been having a knotted feeling in my lower abdomen. My question is could I be pregnant? & is it to soon to test?