I’m Allergic To Sulfamethoxazole Trimethoprim. I Recently Went To The

I’m allergic to sulfamethoxazole trimethoprim. I recently went to the doctors and they ran labs I got a phone call from my doctor who prescribed ferrous sulfate 325mg (65MG) Tablet because I have low iron levels on my second day of taking it (today) I didn’t feel so well. I took the medication prior to eating my breakfast. Few minutes passed and I got really nauseas and puked. Two minutes later my face is covere mf with hives. I’ve taken two Banophen 25 mg caplets every 4-6 hours and the still see no change on my face. What should I do?