Constant cramping

I got my BFP on Jan 5th at what I think is 12DPO. puts me at roughly 4 weeks 1 day today. Due date estimate Sept 18! I’m soooo excited and this is my first pregnancy.

For the past 3 days, I’ve been pretty consistently cramping. It’s not super painful like my period cramps where I’m debilitated but it is super annoying. There’s no spotting or bleeding so far. Every once in a while I get sharper pains on either the right or left side. I’m don’t know if I’m gassy and it’s causing pain or it’s something else. It’s making me very nervous. I don’t know how to relax about it. Any tips? Any stories?