Some chiropractors are able to adjust hiatal hernias, you might look to one of them to see if they can help you. Good luck!
I also have one and have found that as long as I do not eat choclate, pepermint, drink soda, smoke, I am ok. Yesterday I had a brownie and today I am paying for it. I am having very bad heartburn and my chest and right side are hurting.
I am also have endo and have started PT for pelvic pain. The theripist did the message on my stomach that really help my heartburn...Amazing.....
Good luck