After eating greasy food yesterday left side of body aches?

My husband is 46 y.o and after eating greasy food yesterday his left side of his body aches. He hasnt had any health issues as of yet. And his stomach aches him also right where his gall bladder is.I want to know what we can do or what he should take ? He doesnt want 2 go to the emergency room.
Please tell us what you think it might be.

Age: 46
Medications: Noro, gabbypattin
General Information: Gall bladder aches