Can anyone relate?

Sierra • Mama of a little princess, and expecting. ❤😍
Hey girls,  so the last few days I've noticed that when I'm up walking around I feel like I've been cycling a bike.  
Haha. I'm not sure if it's because she's head down, but seriously its actually as if someone has pulled my legs apart....anyone get this and have some remedies?? I'm 32 weeks. I've been laying on my left side with a pillow in between my legs. We have a measuring ultrasound on Thursday to check her weight, because I have GD. (Gestational Diabetes) The pain is also going into my lower back.