8+1 and can feel uterus?

Kimberly • TTC #3 after a 9 week m/c and 22 week m/c
This is my 5th pregnancy. 2 live births and a 9 week m/c in Feb and 22 week m/c in august. This morning while laying in bed I could feel my uterus coming out of my pelvis. I did have a full bladder. Would it pop out faster because this is my 3rd pregnancy in a years time or does it normally happen. I can't remember with the others! I am on the smaller side, but not showing at all yet.