Between mon & tues i took 3 allegra (fexofenadine) pills for a cold. today wed, i'm feeling weird in my head. i also am on minocycline. should i be concerned?

No: Good that you ask when on multiple medications. Although what do you mean by "weired"? What kind of allegra, (fexofenadine) and what dosage? We don't know and also how much minocycline you're on and for how long? we don't know, but either of them can cause drowsiness as a side effect, although they don't interact. If you really don't feel yourself and the symptoms are worrisome, see your doctor,