I'm single but here goes.
I have been manic while drinking and depressed when not drinking.
I have been manic and depressed at the same time while on the wrong meds.
All three kinds kinds of phases have lasted months, days, hours or minutes. An old colleague (in a counselling-coaching role) once commented an interview with me was like a roller-coaster ride for her.
Hoping the others' information is useful also,
