I’ve been prescribed 10mg methadone x2 daily and 2weeks ago my dr changed it to 10mg OxyContin x2 daily. I now have double vision and am listless and cold. I have several methadone left from my old prescription. Would I be able to change and take the methadone instead of the OxyContin until I can talk to my dr on Monday. I was told the change was due to something from my blood work showing up wrong? Please answer