Pain while walking? 23 weeks

I don't want to harass my doctor if it's just something minor, curious if anyone else has experienced it.

When I'm walking for more than like a minute, I get this intense pain on the lower right side of my stomach (circled in picture, pain is more towards the middle of the circle ) if I'm walking around the house or work it's fine, once i get walking outside or a store it starts to kill me. It stop hurting after I sit down for a few minutes. Not sure if it's normal, or if I should be getting checked to make sure everything is fine.

Any input is appreciated!