Lamictal and abdomen

I have been on Lamictal for approximately 7 years. The product initially seemed to work a bit on controlling my seizure activity, and did provide a bit more confidence in social situations. At this point I was taking 400mg per day, and had little side effects other than the absent mindedness, and occasional problems with vertigo.
Briefly, about a year ago, I began having an increasing number of partial and general seizures, and was brought up to a dosage of 700mg per day. It was at this point that I began noticing what could only be called "hard-core" side effects. These included days where I was just totally confused, paranoid, suicidal, having an unrelenting feeling of not being able to breath, feeling bloated in my abdomen, and regularly being struck with a very irregular, very scary, rapid heart beat.
At this point, I am taking 600mg per day, and am still having most of these side-effects, but in decreased frequency. My neurologist never mentioned any of these possible symptoms, and doesn't seem overly concerned about any of the problems that I have mentioned in the past. With this in mind, it is somewhat relieving to see that there are others out there who are noticing similar effects.
If anyone can explain the difficulty breathing thing a bit more, it might help me wrap my brain (no pun intended) around this whole mess. I'm not sure if it's related to a decrease in blood pressure - I've been monitoring mine and haven't seen any irregularities. Or if it's related to a decrease in the amount of oxygen in the circulatory system due to the drug itself, or as a side-effect of the shallow breathing I have read about in other posts here.

I have been using this med for 18 months going up to 400mg and now back to 200 mg with the hope of coming off totally. I am concerned however with the labwork I had recently as compared to routine labs in April.. My WBC and neutrophils are lower. I just recently had 2 CT's of the abdomen and pelvis with an ultrasound scheduled on Friday. I am so aggrevated with this and I am glad I investigated this drug a little more due to feeling hopeless the physical and mental problems I am having. My mood swings never really stablized and are still the same. Has anyone come off of this with positive results and did they treat your bipolar with a different med with better results? Thanks

I have been prescribed Lamictal for seizures, and am currently taking 400mg daily, with my 300mg of Dilantin. Had horrible side effects this weekend-nightmares, exhausted, worsening depression, crying jags, difficulty swallowing. Has anyone else experienced mood changes for the worse while on this drug?