What are some other alternatives to Lamictal for Bipolar II Disorder?

I was prescribed Lamictal and it was great at first as I was slowly increasing the dosage; my moods were stabilized and my irritability was gone. However, when I hit the 100mg mark, within a week I developed a lot of the side effects listed as "rare." Early awakening, exhaustion, hallucinations, eye blinking, etc. My Psychiatrist's nurse (I call her the gatekeeper) is being very unhelpful, and doesn't believe that the Lamictal is causing this, but it all started after I was on the drug. I am now only taking 50 mg daily and 50 of Seroquel to help me sleep. The Seroquel does put me out for 8 hours but I am still exhausted like before and have developed HUGE black circles under my eyes and am really pale. I feel terrible. Maybe I should try out for the casting of Twilight..... :) Anyway, I need some advisement on this because I feel so frustrated with the lack of istance. When I told the nurse today that I didn't feel any more energized after finally getting adequate rest she said "maybe you're getting too much sleep." AAAARRRRGGGGHHH!!!!