Wellbutrin and circumstances

The first day I didn't notice anything. The second day I had a build up of energy as the day went on so I went for a 5 mile walk to burn some of it off. Generally I had more energy, but I had severe anxiety as well. Circumstances triggered my anxiety, however, my physical response was out of proportion to my thoughts. My heart felt like it was going to explode out of my chest. I kept saying to my husband, "I don't know why I am reacting this severely." By the way, I had no idea that wellbutrin caused anxiety. My doctor told me there were minimal side effects. I took her word for it. I did no research on it. I started out with samples that the doctor gave me. When I had my first prescription filled, it was then that I read about the side effects. I also had severe insomnia in the first month. I currently have extremely shaky hands especially when I do activities that require fine motor skills. I had mild dizziness which is gone now. Nothing too severe though. By the way, I am on 150 mg.