Sayang, at 37+ weeks dengan cramping on-and-off macam nak period, increased discharge, dan back pain, please call your hospital or go to labour & delivery unit sekarang juga, jangan tunggu. Better safe than sorry at this stage, and they need to check if ini early labour signs or just Braxton Hicks. A few of my mum friends had similar feelings and the doctors managed their cases perfectly, so don't worry, just go get checked out now okay?