So sorry OP . . . . I know well what it feels like to have a trip all planned, and then have health issues put everything in jeopardy. I went through it last summer, literally didn't know until the night before the trip whether I was going to go or not, and then, when I did decide to go, I had no idea whether it was a good idea or not, as my Dr was unable to get tests done that he needed in order to really advise me properly.
To make things worse, our first day in the parks, I got dehydrated, and ended up needing an ambulance. Spent a day and a half in the hospital, but got the tests that I had needed here at home, and in the end, enjoyed the rest of my vacation, knowing that I was ok.
I hope your trip is a little less dramatic than mine was last year, and you are able to get the information you need before you go. Here's hoping for good news from the Dr., and an enjoyable trip for you and DW!