What multivitamins?
We are very far from convinced that sheer amount of CM matters. It may be that it's quality over quanitity (indeed, a lot of women with all daughters are reporting a lot of CM, and with at least one of my boys, I had NO visible CM and didn't even realize I'd ovulated!) So I would not really worry about this regardless but I do want to make sure that there's nothing we need to fix.
ARe you taking guaifenesin in the fertile week?