Suggest Treatment For Hives On Legs, Back And Chest Area

I started to break out in hives all of a sudden. I went to the Dr s twice and was told to take Benadryl. They come and go and in some cases my lips swell ups. They are more commons on my legs, back, and chest. I don t know what seems to be causing it. All I know is that when I eat a good meal I break out. I am a very picky eater and I have not changed my diets. I stay away from seafood as the smell makes me nauseous. I have seasonal allergies and breakout when bitten by a mosquitos, bee, or any insect bite. The last Dr. recommended to run an allergy test, but I have no insurance. I already had one done and they told me that I was allergic to the season allergens like pollens, etc. I read several articles on allergies and find it to be quite contradicting. I even been told that dust mites can cause allergic reactions. I keep a clean home and dust very often. I find myself fighting a battle I can t win. What can be causing my allergies?