be in a (blue) funk
slang To feel sad or unhappy for a lengthy period of time. Ever since I got rejected from my first-choice college, I've been in a funk. I'm taking Don out tonight because he's been in a blue funk since his wife left him.
be in a blue funk
1. To be in a melancholy, depressed, or dejected state. Jill has been in a blue funk ever since her wife moved out.
2. To be in an extremely anxious, nervous, or fearful state. I was in a blue funk waiting to hear the outcome of the surgery.