Today I had a snack of cashews, just a small handful, and after I ate it I immeditaly began to feel sick in my stomach and I felt some sort of pain around my heart. Now normally I do eat healthy, and I am very active so I don't have a strange weight/food related thing, and before today I've never had an issue with eating cashews, but for some reason my body just didn't want to digest it. Do I have an allergy symptoms?
p.s I'm not familier with this because I've never had an allergy before.