Try not to go down the line of anti-depressents. They aren't amazing - a lot of people get stuck on them for life.
You need to sort the root cause and tackle it that way. Taking some time off away from aviation all together might help. Make sure you eat a good, healthy diet and can sleep well. Talking is also good. Have you gone back home to your family/friends? I know how hard it is to be alone during difficult times. I am lucky I have some friends here but I have an ongoing medical battle and wish I was on the same continent as my family, no one can replace family.