How many more treatments?
This is one of the hardest questions to answer! Quite simply, different people respond at different rates to treatment.
Acupuncture has an accumulative effect: typically it requires a course of treatments to develop the benefits. This means that you may experience little or no immediate improvement in your condition after one or two sessions.
As the factors that are contributing to your complaint are dealt with, progress can come quite quickly.
Many people do experience marked improvements in their condition after each treatment, and to a certain extent, I would expect you to notice some change each time.