Hi Dianne, there is all sorts of information about this in the Guai Support Group pages. Here's the link:
http://fibromyalgiatreatment.com/newsgroup.htm
The administrators there can give you personal attention (unless you're a patient of Dr. St. Amand then you should ask his office directly).
A couple of points: it's usual for us to split our total daily dose in half, taking the same amount morning and evening. Is there a reason why you take such a small dose in the morning?
Also, foot pain is very, very common among fibromyalgics.
Hope this helps,
Carolyn in SoCal