Dear Patient: Thank you for writing to us.
Here are your symptoms:
Weakness
Fever
Chills and shivering
Dizziness
Depression can cause the symptoms that you are talking about. Also, I would like you to see a Doctor to get checked for Viral fever, Tuberculosis and Malaria. All of these can cause the symptoms you are talking about.
If it is none of them, then you may be having a psychiatric related disorder. See a Psychiatrist for help. All the best.