Pelvic pressure

I read that otterbox pressure could be a sign of early labor...however, she still moves around quite a bit, no contractions that I know of, only problem is I literally feel so much pressure in between my hips that it's hard to stand up straight...and then I feel like I need to pee because of it!! Please tell me I'm not the only one going through this!? I'm 36 weeks 2 days!!