Wellbutrin and several times

I've been taking WB xl 150mg for 12 days. I also take Effexor XR and Lamictal to treat bipolar. I've been feeling so depressed for about 4 weeks without any cause and I wanted to stop smoking. My doctor thought maybe I was experiencing SAD. I totally withdrew from my friends and would only leave the house to go to work. I just felt numb and like I couldn't get out of bed. I started feeling better almost immediately after starting WB! I did have a splitting headache and neck pain for about a week but now it's completely gone! My smoking cravings were gone within 3-4 days. I have no desire to pick up a cigarette even if I think about it for a while. I feel very calm yet extremely focused and energetic. My numbness is gone and it feels great to be able to cry and experience emotions again. I am LESS angry and I've quit snapping at people - which I used to do constantly. I still wake up several times during the night, which is new, but I try to rest during the day and go to bed earlier. My hunger does go up and down - sometimes I eat everything, other times I have no appetite. Really the only big side effect I have at this point is muscle and joint pain. There is no miracle pill. Sometimes you have to use mind over matter also.