Round ligament pain?

Hellooo I’m 18w5d and I keep having these bad pains on my right side.

It started about 2 weeks ago and then happened a week later and then just now.

What happens is that I either attempt to stand up straight and something jerks me back down or im walking and then I quickly hunch over.

It doesn’t last for just a few seconds or minutes, it can go ooonnnnn about 15+. . I’m currently hunched over with my elbows on my thighs to ease the pain.

I was looking it up to see what it could be but the only thing coming up is round ligament. It sounds like a severe case of RLP.. I’m not bleeding or anything but the right side where baby is, is so extreme. Like I just got jabbed right in my pelvic bone.

It hurts to walk, i can’t sit or stand straight, itslike I have to compress my stomach down in order to pretend it’s not there but as soon as I move, it’s still there and seems to be getting more frequent and just attacks without warning. No warning just a quick scrunch of my uterus that causes me to hunch over and it feels like a drawn out cramp.

I just had an anatomy ultrasound Tuesday and she didn’t say anything so I guess there’s nothing there?

Is this just ligament pain ?