I keep vomiting especially after eating fatty unhealthy foods or whenever i drink anything carbonated. i also vomit after drinking or eating anything acidic. i also have some abdominal pain here and there. i want to know if i should just go to the er.?

Vomiting or regurg?: Big difference--if regurgitating foods as you describe (that promote gastroesophageal reflux), then you probably are describing gerd & diet modification (& acid reducer) is in order. If you are really vomiting as often as your question implies, then you have a bigger problem that warrants medical evaluation (checking for ulcers, gallbladder disease, pancreatitis, gastroparesis, pregnancy, etc.).