Hi Paula,
Perhaps cholycystitis aka inflamed gall bladder?
When I was a student nurse a surgeon giving us a lecture on cholycystitis and said a lot of patients with this come under the category of being at least forty, female, fair, fat and flatulent.
While I'm not suggesting you fall into any of these categories it might be worth noting!
Seriously though the poor tolerance to a fatty diet can be common with an inflamed gall bladder too.
Regards,
Lee