Ay, common yan, mama! A few of us felt the same thing around that time, it's usually dahil sa weight ng baby at how the uterus is pressing sa nerves, plus the swelling na parang inevitable na sa 7 months. Hindi scary normally, but since you're experiencing it palagi, mas good na i-mention mo sa OB mo next visit para ma-check if there's anything else going on, like gestational diabetes or preeclampsia, better safe than sorry, diba?