I am 10 days clean of methadone, and have been sneezing like CRAZY all day, and numerous times in a row. I hardly ever sneezed before using and if I did it would happen one time but not 4or5 times in a row??? Why does this happen? I have searched the web, but all just say they had same symptom, but no one really had a "medicial" reason as to why??? HELP!!