Stomach tightness

I went on a 10 minute walk earlier about half way through I noticed like a cramping pulling feeling on both sides and it was kinda painful when I got home I rested I had the pain almost like round ligament pain and pain in my hip that was a couple hours ago and now I’m having my stomach keep tightening up…. I’m worried I may have done something and I don’t know if it’s just my muscles stretching and now they are just sore or if something is wrong I don’t feel any pain anymore but my stomach just keeps tightening up. Has anyone felt this after walking?!