Dang, Amey! You beat me to it! Just exactly what I was gonna recommend.
Cutting doses in 1/2 can help relieve some of those side effects (making sure the pharmacists says it is ok to cut the pills - I have done that with the Bentyl and the Reglan, both). Bentyl worked really well for me when I needed it. I still take one in the mornings to help with some crampiness that I have first thing in the day and when I am really stressed. Kind of a maintenance med for me.... not for everyone tho.
Hope you are getting along a little better each day. Please let us know how you are doing..