It is as it would be anywhere, full of ups and downs.
And yes you are going to feel lonely, scared, threatened, miss your family, see your self-confidence go down the drain, worry about your future, feel heartbroken, and feel a whole lot of emotions you have never felt before or imagine you would feel.
Though you would have a student activity centre (sports centre), wonderful friends from all over India, beautiful and very smart girls to have lots of crushes on, a very cheap all night canteen, clubs to relax, departments to work, fests to enjoy, amazing infrastructure and professors to fulfil your academic desires.
I guess it will keep you busy.