Contractions? Tummy troubles?

Willow

37w4d

Top part of my abdomen feels like someone is squeezing my insides together. Where the top of my uterus is. Constant for about an hour for a brief 3 minutes of dulled down pain.

Have diarrhea, but I have throughout this pregnancy

I have been up walking like crazy the past few days. Maybe I over exerted myself?

Ideas? Similar stories?