Allergy / intolerance to chicken ?

Hello everybody,
Let me first say I currently have zero allergies (not even seasonal) so I have no idea what it feels like.. So any info about if this could be allergy related based on the symptoms would be extremely helpful.

I eat chicken often.. At least once a week. On Monday I ate out at a resturant and ordered grilled chicken at about 800 pm I felt okay went to sleep and all was normal. I woke up around 3 am and was very nauseous, crampy, and spent the next couple hours vomiting and did get a low grade fever which disappeared by 2pm on Tuesday along with all of the rest of the symptoms. I figured this was just some type of food Bourne illness like a bad piece of chicken or something.

On Wednesday I ate as normal with no stomach upset, I ate shrimp, a hotdog/sausage type thing and Thursday during the day I had pizza for lunch and was a-ok.

Thursday night my boyfriend and I went out to a sub shop and I ordered chicken tenders around 5 pm. I came home and fell asleep around 7 And was woke up around 1030 and had absolutely liquid stools and stomach cramps.. I also vomited once. This went on for about two hours and then I fell back asleep.

What concerns me is I was able to eat other foods between both episodes and had no stomach problems. However, both times when I had chicken I had upset.

Could it be an intolerance or just a weird coincidence. I know there is no way to know for sure unless an allergy test is performed.. In just looking for ideas