Wah, at 36 weeks dengan banyak lendir putih dan rasa nak terberak tu memang boleh jadi signs awal labour, especially since second baby tends to bergerak faster! Sakit bawah + pressure tu common, but since you've never felt proper contractions before (C-section for first), you won't really tahu the difference sampai labour fully kicks in, honestly contractions rasa macam period cramps yang datang in waves, very different from constant pressure. Best you check dengan your doctor or go to hospital je to confirm everything's progressing well, because at 36 weeks they'll want to monitor you properly; a few of us mums dah pernah kena false alarm tapi better safe than sorry lah. Lepas cleared by doctor, rest up, second baby coming soon maybe!