Is it normal to get a stomach ache from eating greasy foods?

Greasy foods are often prepared with a lot of fat which makes them hard to digest. Stomach ache after eating greasy foods can be due to overeating, gas pain and poorly digested food. Try limiting the amount of high fat foods in your diet to avoid stomach pain after eating. See your doctor if the pain is confined to the upper right abdomen as this may indicate a problem with your gallbladder.
Reference: http://www.medicinenet.com/abdominal_pain/symptoms.htm