Ay, na-curious ka na rin! Honestly, hard to tell kung mucus plug talaga without seeing it kasi iba-iba ang kulay at consistency, pwedeng clear, whitish, or may tinge ng blood, and sometimes scattered lang sa loob ng ilang araw. One of my mum friends said hers came out little by little, tapos nag-labor siya after two days, pero isa pang friend ko wala syang naramdaman na lumabas eh nag-deliver na agad, haha. Since you're almost 40 weeks na, mas okay na mag-check ka sa OB mo para ma-confirm if it's the plug na or just normal discharge, sila na lang ang makakasiguro at makakapagbigay ng peace of mind, plus they can monitor kung ready na ba ang cervix mo. Exciting na!