starting to feel that belly 😳

Last night my dog woke me and my husband up in the middle of the night, and I was laying on my side and I almost felt like my ab muscles were being pulled down towards the bed, like my uterus was heavy and was sort of falling to one side. Like it was weighed down (and also up in my belly area) Anyone else felt this? I have also been feeling pinchy feelings in my uterus/abdominal area when I stand up too fast from sitting. I JUST started really showing and apparently also feeling!! 😳