How bad are cigarettes for you?

So I just started smoking more frequently. I used to only smoke when I was drunk, just to kind of chill out and relax outside. I haven't drank in about 2 months due to circumstances, and have picked up smoking. I've been going through about a pack a week, and don't feel anything close to addiction. I've agreed with friends and myself that if I feel anything like addiction or that I need it, that I'm quiting. What I'm asking, is how bad is doing what I'm doing for me? Not addiction but 2 or 3 a day? Obviously it's different for addiction, but what health affects will I notice, if any?