I'm having period like cramps off and on, sometimes in my back, other times in my stomach and also…

I'm having period like cramps off and on, sometimes in my back, other times in my stomach and also (maybe tmi lol) diarrhea, and when I go I have a lot of pressure down in my lady bits. It just started suddenly and I don't know if I should be worried or not? 😩😪😷