not know if (one) is coming or going
To be in a state of confusion or chaos, especially due to being very busy or overwhelmed. I have so many appointments today, I don't know if I'm coming or going anymore. Lisa has been so busy getting everything ready for the party, she doesn't know if she's coming or going.
coming or going, not know if one is
Be in a state of mental confusion, as in He has so much to do that he doesn't know if he's coming or going. This idiom was first recorded in 1924.
not know if you are coming or going
be confused, especially as a result of being very busy. informal