Aduh sayang, I know how frustrating this is, a few of my mum friends went through the same thing around 38 weeks, contractions semua ada tapi cervix belum ready, and the backache is THE WORST kan! Lepas few days some of them baru start dilate, ada yang kena tunggu sampai due date or a bit over, so timing memang berbeza-beza. Try paracetamol if it helps with the ache, walk around, massage lumbar area, and warm compress memang boleh ease the discomfort sedikit, but honestly, check back with your doctor in a few days if contractions tak consistent atau if the pain changes, sebab they'll know best what's happening and whether anything needs to be monitored closely.