Hi Tish. Born in UK, where I was diagnosed at 21 with CD. Had surgery which has not fully solved the problems but has allowed me to keep it manageable. That was 50 years ago. Since then I have lived in Zambia, South Africa, Florida, Panama & for the last 5 years in the Philippines. I just decided that I was going to let my disability affect my life as little as possible.
Plan your trips ahead of time. For any given destination, nowadays you can usually get a list of doctors or specialists in advance. Email them about your problem and ask if they can give you help if it becomes necessary. (Remember that many drugs can be bought over the counter in most countries) Most big cities, for example, have hospitals and doctors 90% as good as U.S equivalents at 20% of the price. Be very careful of what you eat & drink. Again, most big cities have U.S. standard hotels and cuisine.
Start by going somewhere reasonably close - Canada perhaps in your case - or somewhere you have relatives or friends.
By far the hardest thing for you will be making the decision to go somewhere you have wanted to go - and then sticking with it. You must rule your disease rather than let it rule you. I know that is easy to say, but you only get one life. I know - I've been there & I still am. Go for it.
Good luck.