I Believe I May Have Suffered A Seizure The Other

I believe I may have suffered a seizure the other night and also suffered one eight months ago. I feel fine now but wondering if I should contact my doctor? What happen just before was that I had an upset stomach and then blacked out. My husband said I jerk and stiffen up and then did nothing, he didn't even know if I was breathing. I come too and I don't remember what happened, but still had an upset stomach and then diarrhea.
This has never happened to me before, l am concern, but not sure what I should do.