Info on maybe quitting specific meds?

I've been taking lithium and lamictal for a year or so and like everyone else I still have some of those ups and downs. About a week ago I forgot to take my medicine and got a little forgetful/careless. I feel the same, maybe a little better. Would it be stupid to still not take it? It causes me to be sick and I still have mild mood swings. I wonder if I'm fine but I read some people crash with serious manic or depressive episodes from this. I don't want to see another psychiatrist just because I recently moved and my insurance can't cover those visits. Just wondering if anyone has suggestions or information that could be useful.