Ahhh, ini memang situasi yang perlu ikut closely dengan doctor mu! At 37 weeks 6 days dengan baby head sudah besar dan weight 3kg, tu signs yang baby ready anytime, tapi "anytime" boleh bermakna minggu depan or bulan depan, depends on how your body progresses. Contractions (the tightening) yang you're feeling hari-hari tu bolehlah be Braxton Hicks or early labour signs, tapi without actual signs (bleeding, waters breaking, consistent painful contractions), hard to say mana satu. Since doctor dah start management untuk big head situation, make sure you see him/her regularly dan report every change, sakit, discharge, anything. When it's time, your body will give clearer signals! Jaga yourself, rest when you can, dan stay in touch with your medical team. You're so close now!