Ay sis, sa 35 weeks yan ay most likely normal discharge na nabubuild up lang, pregnancy discharge talaga gets heavier at runnier towards the end, kaya parang sipon talaga, lalo na pag nag-pop ka at may pressure sa area, lumalabas siya! But since you're feeling heaviness sa puso mo after and you're a bit worried, best magcheck lang sa OB mo just to be sure everything's okay, especially na malapit na delivery mo, mas makakatulog ka ng mahimbing pag confirmed na okay lang lahat. One of my mum friends had the same thing and her doctor just said it's totally normal, pero she felt better after the peace of mind talaga, so worth the checkup!