Eh common ja ni around 32 weeks, hormones are loosening everything up and baby's position puts pressure on your nerves and lower back, the frequent urination part especially is normal lah! But sakit sampai lenguh-lenguh and senggugut macam tu kena check dengan doctor sure-sure, especially since you're worried about early labour, just to make sure it's not something else like UTI or positioning issues. Dalam meantime, try warm compress, prenatal pillow between your legs when you sleep, and jangan berdiri lama-lama. You're doing great, mama, third trimester aches are real but most of us go to term fine, tapi check in dengan doc la untuk peace of mind ye!