I think I am in depression. Late.

Hello Friend, Good that you are seeking a help here. Your symptoms are sign of anxiety. You may be over thinking about one particular issues like career or relationship or about job related stress and getting into emotional disturbance. As body and mind are interlinked, such emotions also affect physical condition like sleeplessness, lack of appetite, nervousness, constipation, tiredness, dryness and many more. You are experiencing few of them already. No worries, anxiety is also similar to any other physical illness and can be treated through  counseling session and few lifestyle changes or therapies. Take a professional counselling support to as a first step to isolate the root cause for your anxiety and explore the possible solutions. Be confident. You will be alright soon.

Consult a psychologists directly or reach me online through Practo for further detailed evaluation and recommendation