I Have Just Had A Test That Took 4hrs. I

I have just had a test that took 4hrs. I think called gas. emty clean out. My food is staying in my stomach for long periods of time. I have had massage surg. on my back 3 years ago, maybe this is when it all got started- I don't know. Their is so much to tell. I'd like to know your thoughts. There is only one med for me to take.I believe it is called reglin? pharmacy had to go to far to get it and I am to take this every time I eat. Talk tome.