I also feel like vomiting after eating, what could this?

Nausea after eating: There are many different reasons why this may be. For most patients this may be acid reflux or some other form of indigestion/food intolerance. For women it is imperative to rule out pregnancy. For all patients it begins with seeing your doctor so a complete history and exam may be done. Your PCP may want to run test or send to a specialist depending on findings.