I Accidentally Overdosed On My Migraine Medication That I Didn't

I accidentally overdosed on my migraine medication that I didn't take it for six years called butyryl and alcohol which I never drink with my migraine meds .. I was in a coma for several days life-support breathing ventilator I was released from rehab after only eight days doctors said I did a miraculous recovery I still don't feel hundred percent little tired I start training in the gym tomorrow
Any idea what the recovery time would be .. Dr. say don't trade for six months don't take any unnecessary meds