Cramps and nausea mid cycle?

** (Maybe a little TMI?) **

So I’m not due for another two weeks, but have just sat down to have dinner with my partner and after finishing the meal started to feel a little nauseous, then out of nowhere got a really sharp pain, very similar to period pain but a lot stronger, have gone to the bathroom and been sat on the toilet for a short time now, thought I was going to be sick, had a bit of diarrhoea and had to take all my clothes off because I was absolutely sweating (its been a hot day but this was crazy hot).

I’ve tried googling to see what I can find but everything online is a huge mix of various things and I don’t want to scare myself into thinking it’s something bad if it just turns out to be ovulation pain or something.

Has anyone else experienced anything similar?