Chances of me being prego?

I've been off my period for almost three weeks LMP was may 19th to 24th. I had sex. On the 24th when I got off then three more times since then on may 27th and 28th and last friday on june third. I have had headaches, moody, boobs been sore n tender, left side hurts and lower abdominal.. eating more and drinking a lot of fluids. I have had fevers here n there. I've had a lot of gas.. this has been going on since five days after my period. Im just wondering what it could be. I took a test negative,too early tho. I don't have stds neither does my partner and I don't use protection. I am suppose to start in a week.