I've been on 300mg of Lamictal for over two years now. I found it to be a Godsend! The only lasting side effect I have found has been a slight blur in sight. Not enough that it changed my eye glass, nor my contact lens, prescription strength. I mainly notice it when I am at the computer for long periods of time and watching TV for a long period of time. After a while Abilify was added to the mix, (I have severe depression), but I am no longer on that anymore and doing fine.
Sometimes, I have a little "skip" in my speech. I used to give demonstrations and speeches all the time. I started having these little "skips", etc. before the Lamictal was added to my meds., so I don't think it is the Lamictal.
Hopefully, it will just be a short term thing for you.
Ive never been on that med so best thing I can say is talk to your dr. and tell them what's going on