Hey girls, anyone have any experience with pain in the pelvic bone? Or…

Hey girls, anyone have any experience with pain in the pelvic bone? Or how would you say "bone around the crotch"? It's been pulling all day (on the left side). Has anyone else experienced this? I read online that it's normal in the third trimester because muscles and ligaments prepare for childbirth! I'm just going to sit or stay put, but when I stand up, it hurts right away. But if I walk, everything is fine)