Uy mama, please go to your OB or nearest hospital na para ma-check agad, kahit safe lang talaga ito usually, 37 weeks ka na at importante ma-assess ng doctor kung ano talaga ang nangyayari, lalo na may pain ka pa. Hindi worth the risk na maghintay lang, alam mo? Once na okay ka na from the doc, ease your mind na. A few of us moms went through similar things near the end, at mostly normal lang, pero the peace of mind from checking is really priceless talaga, especially ngayon malapit ka na!