These are the symptoms that you have mentioned. You must consult a mental health professional to get a clear picture of the problem you are suffering from.

Hi I know how it must be feeling right now but since you have asked this question here it definitely denotes that you want to get over this. This will power is the most important tool which will help you get over your fears . However to tell you the exact treatment plan I would want to know since when is this happening? How is your sleep and appetite ? Do you have a fear of being evaluated in social situations ? I need an answer to these questions and would want to know more to give more precise treatment plan that suits your needs.

Are you aware of the reason for your sadness! If yes,  are you finding it difficult to handle it?!!! Were you able to share with anyone close to you!?? If you feel that you can't discuss with them, Then,  do consult a psychologist either online or offline.