I had been on Suboxone for 2 1/2 yrs. I stopped those and have been on Subutex. On the 2nd day I had a migraine. I am going back to Suboxone- how long should I wait between doses? I don't want any side effects. Does anyone know anything about switching back and forth with these meds? I have been off opiates for 2 1/2 yrs, minus Subutex.