Hay, kailangan talaga niya tingnan ng OB mo yan para sure, mama! Ang mucus plug kasi usually may slight blood tint or jelly-like consistency siya, tapos once it comes out na, labor signs follow within days or weeks, pero ang normal discharge naman is clear to milky lang and walang specific timing. Since 38 weeks ka na at 1cm pang lang, better to have your doctor check if it's the plug or just hormonal discharge, kasi iba-iba talaga per person at important ma-confirm. A few of my mum friends were confused din sa ganyang stage, so don't worry, your OB will give you peace of mind right away!