Behaviour change. Any antidepressants.

I have had a few personal problems recently. And my behavior towards things have changed recently. I used to be very calm and patient.. and I was also very sociable. I used to love being around people. But after all the problems that I have recently had, I have become short tempered and I also act aggressive in my temper sometimes. I don't know why, but I am not able to control it. I don't like being around people or talking too much to anyone nowadays. I have tried to commit suicide twice, was stopped by a friend once and it didn't work the other time. I know it is wrong. And I don't want to do this. I felt that I might be losing my sanity and I wanted to do something about it before everything goes out of hand. I feel that taking some antidepressants when I am angry might help my cause. The stress has messed up my last two period cycles as well.  I want to be fine and I don't want to do anything that I or my family might regret later. Please help me and suggest any antidepressants.