I know all about the tummy aches- i've got a lot of GI problems. I hope you get better soon sweetie
Do you have Reflux or IBS that you know of? Certain foods can really trigger symptoms. I have a list about a mile long of things that trigger my symptoms...so i avoid certain foods at all costs or eat them very sparingly. Have you been tested for Gastroparesis? I have that -it's basically delayed stomach emptying- so what you eat hours beforhand will suddnely start to upset your stomach later on sometimes. It basically causes a "dumping" syndrome for me- my body will store up foods for quite a while then all at once try to get rid of them- it can make me pretty sick - not a good combo with IBS. Sometimes certain GI issues all sort of combine and make you feel lousey. If your symptoms keep up it might be a good idea to be evaluated by a GI doctor so you can get to feeling better.
The season fries definitely could have done it if the were spicy enough- sometimes you don't have to even have spicy foods to have refulx issues. I have severe GERD- so sometimes no matter what I eat I will still get heartburn....so I take medicine twice a day for it and it works wonders for me!
Until you figure out what's causing your upset stomach though you may want to get some Pepcid AC (It's the best OTC stuff in my opinion when it comes to reflux- it works much better than prilosec otc or any of the other stuff for me- when I run out of my prescription, I always keep pepcid handy just in case!
) That should help settle your stomach down a bit. I've also found that low sodium chicken broth with oyster crackers is a nice light meal when my stomach is upset.
Stick to bland foods for a while- and stay away from caffine (even iced tea has it) until your stomach settles a bit more. If you smoke, that can cause issues too so you might want to consider kicking that as well.
Ginger Ale is supposed to be good for settling upset stomachs. I don't drink soft drinks at all (haven't in over 10 yrs.) But I do keep some of that handy when my stomach hurts and it helps a little
Maybe you could try that too?