Uhhh symptoms and conditions

I have been on Lamictal for Bipolar II for a little over two years now. The first side effect I really noticed was that I had zero desire to exercise anymore. I used to be pretty athletic, loved to go on hikes, now I could care less. Also, my brain is mush. I am a former honors/ Dean's list student; I had one professor in college tell me I was the only person in class who would ever be able to write professionally, and I have been trying to write the same novel for three years now. I forget how to spell words and how to formulate sentences. I can never find the right word. I forget what the plot is, what I wrote in the last chapter, so I am constantly re-reading what I wrote. I started to think that I had ADD because I couldn't focus on anything, and I couldn't remember if I had always been this way or not. Granted, I think I have always had a bit of a problem with executive functioning- organizing, prioritizing, completing tasks- but it has always been more of a problem with keeping my house clean, etc, NEVER with writing. Also, I have always been very good at remembering names, dates, events in history- the random sort of information that makes a person stellar at Trivial Pursuit- and all I can say now is, 'Uhhh... oh, man, I KNOW THIS.' Also, I am becoming incredibly antisocial, which I think probably has something to do with the fact that I no longer know how to talk. (A sidenote: I'd say chances are good that I have Asperger's; socializing has always been a challenge for me. My point here is that I'm wondering whether Lamictal is making the things I have problems with worse, ie, executive functioning, socialization..., etc. I used to be able to overcome these impairments intellectually; now that my brain doesn't function the way it used to, it's way harder to compensate.) I had a conversation with my husband the other day about all of it, whether he thought Lamictal was truly helping me. He told me that I no longer seem interested in doing anything anymore; that I am no longer sharp like I used to be; that I lack the vitality I used to have; that I no longer get excited about anything anymore. Now I know that Lamictal is a mood stabilizer, that I am on it to stabilize my moods, so obviously there are no longer going to be the highs that there once were. But now I feel so flat and dumb I just don't know. By the way, I have worked my way down to 75mg at night from 200mg. (Which is an improvement, I'll give you that- before I was scared to drive because I'd practically forget I was driving, that's how crappy my short term memory was.) Just so you know, I don't feel depressed, so it's not that my dose is too low and I'm experiencing depression. I just don't feel much of anything at all anymore.