I can put mine into 2 groups - BH ones where it's mainly tightening of my whole tummy and more 'real' ones that are tightening + pain. The level of pain seems to have a really wide range - even when I was in labor w/ my daughter some of them were barely painful - while others were really intense.
Last night I actually had some mildly uncomfortable ones that seemed to be squeezing downwards from the top of my belly....

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