Mouth swelling and back sciatic pain

I stopped taking QVAR and my doctor prescribed advair. I have experienced severe mouth swelling and my back (sciatic) pain since starting to take advair. I also took Ibuprofen while on advair and experienced mouth swelling and had to go to emergency. They gave me benadryl. I never had these allergic reactions before taking advair. including no reaction to ibuprofen, aspirin, advil "The only variable has been the intro to advair. Can you give me some guidance on the issue