Round ligament pains?💥

I'm almost 22 weeks & I've had some bad intense lower back pain that makes the sides of my stomach cramp up. I might have overdone it a few days ago but I think the weight is just slit to carry around causing the pain. I tried a warm bath with pain relieving bath salts but nothing. Are they round ligament pains or just growing & the weight being focused on one point? 👶