Welcome to the IBS board!
I know there are at least a couple people who can address your pain. Unfortunately, I cannot. I can, however, tell you that probiotics (acidophilus) are great for the bowels. If you think your "colon is out of balance" then maybe you could try acdidophilus. I know many of us here take it and love it. It is especially beneficial to take after a round of antibiotics and during (or after) a bout diarrhea. I usually take 2-3 pills a day, wich gives me about
4.5 billion live "good bacteria." The recommended dose is anywhere from 1-5 billion per day for about
3 months to get your GI tract healthy (well, as healthy as IBSers can get it). It's not uncommon to take it continuously, as I have. You can never do your system wrong by taking probiotics.
Hopefully you'll find the answers you are looking for here.
Take care, and keep posting.
Co-Moderator for the IBS Forum