I am taking Metoprolol & Aspirin for Angina which were prescribed a week ago. tonight I have had an allergic reaction - a rash with large welts over my face, ears, neck & chest & a few spots on my back, none below the waist, after eating at a Chinese restaurant Is there a connection between the medication & the food , including some shellfish & the usual Chinese stirfry veg , pork & beef ? I am a 79 yr old female.