Ahhh I know how scary this feels, especially first time! A few of my mum friends had the same thing around 39 weeks, perut hardening on and off, rasa uncomfortable, tapi doctor kata belum time lagi sebab signs tak clear-cut. Since your doc dah check and said balik dulu, that's actually a good sign (means baby and you are okay for now), tapi kalau you're worried about the pain or anything feels different from before, don't hesitate to call the hospital or go back, they won't mind! You're so close now, mummy, just a few more days maybe. Hang in there!