Is it a good idea to get a allergy skin test just to see what I'm allergic to?

Possibly. We don't need to go finding solutions when there are no problems - if you have no allergic symptoms, there is no need to test. However, if you are having significant allergy symptoms, skin testing is important. Since the best treatment for allergies is to reduce your exposure to your allergens, skin testing empowers you to reduce your symptoms so that you can use a minimum of medication.