Hi Tortoise, I'm new to Lamictal too. I took my sixth dose at 25 mg this morning. I too have been experiencing rather unsettling side effects, I'm getting used to them I think and they may be fading a bit. It's so hard to sort out what could be from the medication and will fade vs. what is just me being more aware of the mood changes and symptoms I was already experienceing before I was diagnosed.
Unlike you I am more hypomanic than I was before. My physical symptoms are: accelerated leg and arm twitching (much more than I did before), mildly annoying headache that persists most the day, dry mouth, slightly swolen throat/several swolen lymphnoads, my tongue is getting really sore where it has started rubbing a tooth it never used to rub, so I'm assuming it is slightly swolen too, and very bad dry mouth/dry sinuses/dry eyes (This is probably due to the medication I am taking for sleep more than lamictal, not sure!).
On top of these my behaviour has been very strange. In some ways I feel better, if the problem persists at this level it might be worth it, but if it worsens as the dose increases it will be a major problem. Basically I am just more hypomanic than normal. My "happy mania" was very mild, I tend to be more aggressive/agitated when I'm manic. Since I started taking Lamictal this has reversed and become more severe. I'm a little more impulsive and I find my inhibitions to be slightly less. I'm also about twice as spacy as before.
I am only on the one week mark, and am about to call my doc and leave a message. I am a little more comfortable with this all now than I was a couple days ago, but I think I should let her know about the symptoms and ask her about anxiety meds before I increase my dose next week. In the end, I think sticking through these side effects to see if they persist is worth the risk. All in all, Lamictal seems to have a very good track record and far fewer side effects than other mood stabilizers.
I live with people who I didn't think I could trust with all this, but decided to ask one of my roommates to watch me for changes or uncontrollable behavior, likewise I asked a co-worker who has been dealing with meds for PTSD a while to watch me when I'm at work. This might be a good idea for you too, I'm just worried that I'll go off the deep end without realizing it.
Hope it helps!