My baby either kicks like crazy or my uterus contracts when I am low...anyone else?

I hear women say their babies kick while their blood sugars are high, however I am the opposite.  My baby either kids or my uterus contracts when I am low.  This is one of the only signals I get for a low now.  I noticed this with my last pregnancy as well.  I just wondered if anyone else noticed this.

This is my 3rd pregnancy and I am 19 weeks now!

god bless....