Abdominal pain after walking

MM

My husband and I have started walking to try to get things moving with the baby. I’m 37 weeks tomorrow and 1cm dilated so we thought walking would help.

During my 3rd trimester, I get this tight feeling in my right abdomen but it mostly happens when I’m being active (cleaning, walking etc).

Today we went on our afternoon walk and half way through our walk, I got the tight feeling. It’s not really painful, it’s just feels like my muscles are tightening up but just in that area. Nothing else hurts. But this time I had to stop and catch my breath for a minute and by the time we finished our walk, I couldn’t handle the tightness. Again no pain, more discomfort.

I think maybe baby is putting her weight on that side and because she’s bigger I feel it more? She loves to hang out on my right side. I also have an anterior placenta and fear that maybe my placenta is detaching, but the feeling goes away after I rest and only happens when I’m moving too much. Also I have no bleeding and I’m not leaking.

Has anyone experienced this before?? I attached a pic to show where it’s happening.

TIA