Big O

Has anyone had a big O during the first trimester? I’m 6 weeks and 5 days and I had one and it freaked me out immediately after! You know that feeling when you’re so hungry and you can feel your whole stomach grumble? That’s what my uterus felt like! I’m assuming it’s safe because I’m sure women have had O’s for centuries while pregnant. But can someone ease my worries? 😅

I haven’t seen a doctor yet, it’s my first ever time being pregnant, I’m already quite healthy except maybe 5 lbs over healthy weight, and had no spotting.