Mama, please check with your OB right away, especially with discharge changes at this stage of pregnancy, it's better to be safe and get it checked out properly! Honestly, any shift in discharge pattern closer to due date deserves a quick call or visit to your doctor, kasi marami pa namang possibilities at they'll know best what's happening with you. One of my mum friends had something similar at 35 weeks and it turned out to be nothing serious, but her doctor was glad she came in. Wag mag-atubili, it's their job to check, and peace of mind is worth it!