Almond allergy, how serious could it be if i don't know i have it?

You'd know: At your age, you would have gotten obviously sick after getting into almonds. With no history like this, you won't get a fatal reaction out of the blue. Life's hard enough without worrying about possible food allergies. Watch yourself and if you get unexpectedly ill with symptoms suggesting allergy, be alert and figure out what it was.

Food allergy tests: If you are asking this question, you must have some reason for your anxiety. Some people avoid foods because of fear, and sometimes prior reactions have been serious but you don't know the cause. A single skin prick test itself usually only costs less than $10. It would be so easy to get this during an office visit to learn more about sllergies, and then you would have real information to go on.