Adoi, 37 minggu dah terasa mcm nak keluar je kan, but sakit celah kelengkang tu + muntah + perut mengeras especially malam, especially with loss of appetite, seriously kena check with your doctor asap, jangan tunggu sangat sebab bisa ada benda lain. A few of my mum friends experienced similar at that stage and turns out some ada braxton hicks yang kerap, tapi a couple kena monitor for other things, so better safe than sorry lah, especially dengan muntah2 nya tu. Don't wait for labour pain yang frequent; the combo of symptoms you're having needs a proper check-up to make sure everything okay with you and baby. Hang in there mama, you're so close!