Ay, anak, yellow vomit in the morning is something you really need to check with your doctor about, ha, hindi yan basta-basta. Could be maraming reasons, pero kailangan talaga ng professional na tingnan ka para sigurado. Isa sa few of us moms, nag-experience din, and honestly nag-panic kami until the doctor explained properly. Please don't wait, call your OB or go to the clinic soon, okay? Stay hydrated in the meantime, but get checked na talaga.