Welcome to HealingWell!
As mentioned by Keri, that is a lot of trips to the toilet for IBS-D. Are your docs sure you don't have IBD? Have you had the scopes with biopsies and/or camera pill? Have you been tested for Celiacs and parasites? I know you said you have had tests done, but this doesn't seem right. Maybe your next step should be to visit the Mayo Clinic.
Have you tried calcium as a method to control your D? What about
Imodium? There has to be something out there that can help you. If your doc is at the bottom of the barrel then it might be time to find a new doc with a full barrel.
Co-Moderator for the IBS Forum
Please donate to help HealingWell continue to help us..... www.healingwell.com/donate