Aw, first trimester heartburn is the worst, totoo yan! A few of us tried smaller, more frequent meals instead of three big ones, and staying upright for at least 30 minutes after eating really helps, alam ko mahirap pero game changer talaga. Some of my mum friends swear by drinking water or milk in between meals, and one of them avoided spicy and acidic foods na talagang trigger ng atake during pregnancy. But honestly, since you're already having nausea with it, mas better na i-check mo ito with your OB kasi may safe remedies na pwede na ibigay niya (like antacids) especially if parang hindi ka na kaya, better safe than sorry with the baby, diba? Sending you safe pregnancy vibes din!