Sayang, congrats on your first baby! Please go to the hospital or call your doctor/midwife NOW to get checked , perut mengeras + lendir keluar + sakit bawah perut boleh jadi tanda labour or something else yang kena monitor. Jangan tunggu-tunggu, ok? Better safe than sorry, terutama first time moms macam you. A few of us from mummy group always say, "Rasa tak tentu, terus pergi hospital je." Take care, and all the best for your delivery! You've got this!