My Hausarzt told me if I don't feel better next week, she would give me around 2 weeks of sick leave. I've been physically and mentally exhausted since one month to the point where I feel depressed and feel pain all over my body. Basically I feel like a zombie.

I feel guilty taking sick days for this. I have my vacations left for this year. Should I take my vacations to rest and recover?

Tiredness, mental anguish or burnout does not feel like real sickness like breaking my hand or a cold. Is vacation for relaxation? Then shouldn't I take vacation?

If I work another day, I do feel like I would explode. I'm at a point where I'm considering quitting the job and I've accepted the fact that I may lose my residence and would have to move back to my home country. I'm fed up of this.