Bad cramping after sex

Erin
I am  5 weeks pregnant and last week after sex I had the worst cramps of my life and began sweating profusely, there was nothing I could do to get comfortable. It was so bad I thought I was going to throw up, I thought maybe if I took a hot bath it would help. I sat in there for a few mins when it finally subsided but then my hands went numb for about a minute, all in all it lasted about 8-10 mins. After that I was fine, we have had sex since then but I am kinda nervous to have an orgasm bc I am not sure if that will happen again. Has anyone had this happen to them?