i need help

My Question is about Depression.........im going 2 a Talk DR once a week, because i was severley depressed when i wasent around my gf, and someone at my job asked me if i was gay, my head took it in and it feels like im going 2 change that way and i really don't want 2 and i stay home most of the time missing school and work, not being able 2 look at most people, my dr will be getting me antidepresents soon, and could my depression be why my head thinks its going 2 change?