When I have noticed after eating something that has bell peppers in the ingreidients, I have reaction like, light headed, disoriented, facial swelling, tightness in neck and face flushing. I try to avoid foods that are obvious. I ate Italian dressing and didn't know that it had any in it. This is a bad reaction, worse than some of the other times. Lasting longer . Worried. Should I get tested for sensitivity? Please need info. Thanks!