Symptoms of mania? How to stop it?

For the past week, I have had crazy amounts of energy and impulses. I have been looking at buying a new car, (nothing wrong with mine), I want to have sex all the time. When I am at work I am usually ok, but when I get home I kinda get stir crazy. My partner has just noticed me being moody. I want to snap all the time. I have been taking xanax and smoking pot to put myself into a mute state, but inside I still am racing. I haven't been like this is years. I went through a major depression for a year and 3 months. I just want to act on my urges. What should I do?