@debed, I am sorry that you are not seeing improvement. As a post transplant ptient, I am concerned that this nausea and diarrhea have been plaguing you for nearly a year. Now it sounds like your everyday life is being affected. I would strongly encourage you to tell your doctor about this because it is possible that this could begin to affect the amount of immunosuppression that your antirejection meds are retained in your system to protect your transplanted liver.
Debed, Today is Friday. Why don't you give the doctor a call today, before the weekend - that's what I would do even at my 15 years post transplant. My Mayo Transplant Nurse Coordinator and my local PCP always encourage communication.

Do you think you can contact doctor today or Monday?