Are you taking the generic valacyclovir or Valtrex? If it's the generic, do you know which one? For example, I take the generic version, and it comes in a blue bottle. It is produced by Mylan.
I'm asking because it seems like the effectiveness of the generics is very unpredictable. There are horror stories of people getting worse with Mylan (I've also experienced this). Maybe you could try a different generic "brand" or Valtrex. Unfortunately Valtrex is very expensive and some insurance plans will only cover generics (my situation).