Oo, yan usually heartburn talaga mama, especially at 20+ weeks kasi lumalaki na ang baby at nagsisiksik sa organs mo, pero yung hirap sa pag-hininga mo and the chest pain ay better to check with your OB para sure lang, lalo na kahit kailan pa yan lumala. A few of us moms had the same thing during pregnancy and some found relief sa pag-elevate ng head when sleeping or eating smaller, frequent meals instead of big ones, pero since may associated chest discomfort ka na, best na marinig siya ng doctor to rule out anything else.