How do you know Lamotrigine’s not working?

Recently transitioned to 100mg. I’m not sure if it has any impact or…is it so good I can barely notice anything? Kinda confused here.

Context: I previously had hallucinations almost every week and sudden explosive anger prior to taking lamotrigine. I have not had any of those for a month now but I still get irritated once in a while. I also still have random and racing thoughts sometimes.

Does anyone have any idea if lamotrigine’s helping or should I bother my psychiatrist again hahaha