food poisoning eating chili?

Why would you get sick 2 years in a row or for sure 2 separate years at fundraiser chili feed sponsored by the same group? Last year I went to our football game chili feed, I had a bowl of 1/2 spicy & 1/2 regular chili with hamburger meat & beans with shredded cheddar cheese. This year with the memory of it, I decided it was from mixing the two different batches of chili, so I just had 1 bowl of chili and beans with shredded cheddar cheese. I am not sure if I had a bar or dessert last year, but this I ate a long john with chocolate icing on it. This was at 6 pm and by 1 a.m. I was feeling a sick knot like in my gut and bowls and at 4 a.m. I got really really hot and had to go bathroom. I stood up and that is when the head flush sickly feeling hit me. I ended up cleaning my bowls and just vomited one throw up of chili, no urge to do more, which was only a little bit. Last year I was sick for 2-3 days, but I did not throw up, but really needed to throw up, I could not eat for 3 days, and was nauseous and stomach pains extreme. I was keeping up a fitness program both years. A note to say: the shredded cheddar cheese sits out in a styrofoam dish warm from the air, not kept cool. I would just like to know if chili in a roaster is an easy to get food poisoning? I don't know last years situation of exercise or not. The chili was made in those huge rectangle roaster metal pan/oven etc. I have no idea when it was made or how long it sits in the roaster. It just bothers me, 2 years in a row I have gotten sick! I hate this kind of being sick! I hate any kind of being sick!! lolz! Thanks for any discussion, etc