How can i get rid of my depression?

Patient: Hi doctor my name is Dana Molla and i am passing through a depression for 5 ye ars but nt clinicallyt proved. i have been getting suicidal thoughts, i started smoking, crying alot, sleeping alot or too little , eating alot or too little i woulkd like to know how to get out of it because its affecting my health, vomiting, diharea, stomach pain, irreular menstrul cycle, cholesterol plese help me im not able o get rid of it !! thank you