Do antidepressants cause risky behaviors?

I am 21 and have recently been taking perscription antidepressants for about one and a half months now. I am feeling much better and I feel like I have so much more control over anxiety. However, lately I have been involved in very risky things and I don't really have any fear of much like I used to have. Risky things such as smoking a LOT more, drinking a much more often, cocaine, marijuana and I'm a lot more agressive with people, sometimes its negative agression. Sp my ques. is this, do anti depressants usually intensify these behavoirs??