Welcome to Healing Well and to the Bipolar board.
If your doc is a member of a practice, call the office and see if one of the other docs can see him on an emergency basis until your doc comes back. Normally when a doc is going to be gone that long, he/she leaves a number or referral doc to see patients in an emergency. You could call and ask his/her receptionist.
The lithium and anti-depressant will take a few more weeks to reach the right levels in the blood stream, but he should be seeing a little relief by now.
Co-Moderator, Bipolar Forum