Hi Doctor. I Am Currently Studying In My Final Year

Hi Doctor. I am currently studying in my final year of btech.
I think I might be suffering from a type depression. I haven't felt good in quite some time now, more than a year. There's always a certain kind of heaviness i feel on my head. Also, my sleeping pattern is little disoriented. Sometimes i go without sleeping for weeks and then sometimes i keep sleeping for days. I don't know how to help myself as there are no good psychiatrist in my city. I don't know how to go about it. Any suggestion would be very helpful. Thank you.