Feeling my Uterus already at 6 weeks?!

Sarah • 30 | Mama Bear *CURRENTLY EXPECTING* , 2 Cubs, 4 Losses, Trying for #3

I'm currently 5w5d today. Friday, I'll go for our first ultrasound to check out baby.

I am prescribed progesterone 2x a day (400mg total) for my fertility history.

Is it normal for me to ALREADY feel my uterus? When I walk a lot for instance. I can feel the pressure after a few minutes to the point it's a little uncomfortable and I just have the urge to rest.

I'm already slightly showing, because this is my 3rd. But I can already locate my uterus on my lower abdomen.

Has anyone else felt their uterus this much in early pregnancy? Is this just something that happens when you've had more than one twins? Or does this mean it could be more than one? Has anyone had this happen? Any tips for mitigating the discomfort?

My other symptoms include sore, swollen, and tender breasts. Morning sickness. Fatigue. Appetite changes. Acne. Bloat. And dizziness.