Congrats on the upcoming marriage!!
Lamictal (the name brand, Lamotrigine is the generic) actually didn't have a lot of side effects for me when I was on it. Problem was, the generic didn't exist at the time and I couldn't afford it.
Most noticeable "side effect" for me was actually a general lack of emotions. That's actually not that surprising, considering it's also used as a mood stabilizer. I don't think it was a side effect at all actually.
I had difficulty sleeping, but I always have had insomnia so I don't know if they were related or not. There was also a bit of a lack in coordination for me, which is a side effect.
The big side effect to it is the dreaded "Lamictal Rash". It's a very serious condition which can be life threatening, but almost always occurs in the first 8 weeks of taking it. If you develop a rash, get ahold of your doctors immediately.
As far as pregnancy goes, I believe I read somewhere that it can cause a decrease in your vitamins which can lead to pregnancy problems. However, my neurologist treats a lot of women with E who have gone through pregnancies (he actually keeps photos of them and their newborns on his wall as a display, along with what medications they were on throughout their pregnancies.) I asked him about it one day and he said that making sure they take pre-natal vitamins throughout their pregnancy, and that those vitamins include Vitamins E and K, has counteracted their vitamin defencies, which would have otherwise lead to birth defects.
He also said he bans them from breast-feeding, especially with Lamictal, because the medicine gets transferred through breast milk. So to keep the baby safe from being dosed with anti-convulsants after its birth, he makes sure they don't breast feed.
As far as pregnancy goes, definitely talk to your doctors before you get pregnant, and see what they suggest.
