starting to get really worried and driving myself crazy

someone please help! my SO and I had sex on the last day of my period and once during my first ovulation day. both times were protected and we always check the condom after. today marks the 10th day I'm late, and I'm starting to get really worried I'm pregnant. I've been having major cramps and diarrhea (which I normally have) as well as hot flashes. what's the chances of me being pregnant?