Sis, mas better kung icheck mo talaga ng OB mo para sure, kasi maraming things na pwedeng maging mucus plug, minsan clear discharge lang, minsan may slight pink or brown tint, pero walang makakasiguro kundi doctor mo sa actual check-up! I know the waiting game is nerve-wracking, lalo na first baby mo, pero at 37 weeks and 5 days you're close na talaga, so hopefully makikita mo na soon your little one. Keep us posted ha, excited na kami for you!