It's good to hear that you're getting testing. It will help your doctor (and you!) understand what's going on. I'm surprised your doctor hasn't provided you with detailed information regarding how to prepare for your PH test.
Mine (and most) expect you to be off PPI's for a full 7 days before the test. You're allowed Ranitidine (Zantac) for longer, so that helps. The day before test day I think you can use antacids, but test day and until they take out the probe you can't take anything. Why not call your doctor's office and ask what they want you to do.
The motility test is "mind over matter". I'm certain you'll have a great nurse-coach who will help you through it. That has always been my experience. You will do just fine. Just remember that both these tests are crucial to getting to the bottom of what's going on with you and they're a big positive step toward fixing it all.
Here's a video of a woman getting the manometry test. The woman is very relaxed and in my opinion it isn't scary at all. Use your judgement as to whether it would be helpful or not for you to watch it.
You'll do just fine!
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”