How do I answer people's questions regarding my health ?

Until four years ago I was a healthy, active, career woman who never stopped. I was always on the go. Then I became ill one morning and have not been back to work since. Even though my neurologist has not definitely diagnosed me with M.S. but she and my other Dr.s suspect that is what I have. I know I have it and have many of the symptoms. It is relapsing/remitting M.S. Sometimes I look good on the outside and not using my cane that people don't think I am ill. When asked about my illness I just say I have a neurological disorder which is true. I don't want to disclose M.S. until I am 100% diagnosed as I just don't feel right about it. So-am I doing the right thing ? Besides, I dislike talking about my health to just anyone-I would rather forget about it.