Sore & tender uterus

Jen • Single mama 💙

Hi guys👋🏻 so Im 20 about to hit 21 weeks and my uterus is really sore and tender! Especially when I bend down or apply a little pressure to feel the baby move. Im wondering if this is normal due to all the stretching. Also when I went in for the ultrasound at 19 weeks when she would press down on my stomach it was really tender and kind of hurt. This is my first pregnancy so I have no idea what to expect