I ve been suffering with Allergies...sneezing, itchy/watery eyes, which has cleared up, but my sinus membranes are constantly swelling up and so I ve been using nose spray that has the Oxymetazoline in it...its the only way I can sleep. Although, this morning I woke up with a headache and now I ve got this chesty cough and get this metallic taste and just feel, not well. Could it still be allergies, side effect of nose spray, or something else? Laura