Salam! Sayang, at 36 weeks camni, perut mengeras tu normal sebab Braxton Hicks, tapi kalau combined dengan constant cramping dan toilet issues macam ni for 2 days, better you call your doctor or go to the clinic today je to check, tak perlu tunggu. Could be constipation (super common last trimester!) or something else, tapi doc kena assess la. A few of my mum friends had similar and turned out just constipation, but some needed proper check. Jangan tahan, message your gynae or go to hospital checkup, okay? Better safe at 36 weeks!