I originally was diagnosed with UC and later with Crohns. It is just a label for me. Thankfully, I was able to find a GI who has worked with me to help me work out a med routine that has allowed me to live a fairly "normal" life. (Whatever that really is besides a setting on my dryer
Anyway, my pouch is now 14 years old. It has been in the last 4 years that I've gotten the medicine combination that works for me. The label didn't change things, the medicine my new GI was able to provide has given me a new outlook on life. My advise is not to worry so much about your diagnosis being changed to crohns, but how you can get the help you need to live your "normal".