Can you take cough syrup with codeine with metronidazole?

I took vicodin with metronidazole last night, and woke up in the middle of my sleep feeling major shorness of breath. However this is likely due to my reaction to vicodin. I took some deep breaths and relaxed for a bit before i went to sleep and was fine. Also i smoked marijuana right after taking the mix dont know what that contributed.