Sayang, cirit birit + perut mengeras + sakit macam sengugut at 37 weeks boleh jadi banyak benda, tapi you need to see your doctor or go to hospital sekarang juga to be safe, okay? Don't wait, especially sebab you're close to due date. Better to get checked properly than guess-guess at home! A few of my mum friends kena something similar last trimester, and the doctors checked them straight away je, some ada Braxton Hicks, some ada gastro, but important to confirm dengan proper scan and exam. So go lah, jangan delay!