Pain 25 weeks

Hi!

I am 25 weeks pregnant and for about a few days now, I have been having this constant pain in the middle upper part of my stomach. I notice it more when I’m bending down or standing up for a while. It is kind of worrying me because it’s constant, I think I’m going to call my doctor on Monday but I wanted to see if any other mamas went through this? I am still feeling my baby move a lot!