I am here mainly to supply information and help with options.
It sounds like you are depressed, which is biological in many cases, like the flu.
Often, the easiest step is to go to your Primary Doctor. They can help with starting treatment or refer you to counseling.
We do this for a living because we like and care about people. Don't be afraid. Professionals generally understand and are quite compassionate.
Counseling may help with apathy and emptiness, but these issues are also ones that can be helped with medication.
Just start somewhere, and be honest.