Hi and welcome! From my experience, doctors do not take making a diagnosis of Crohn's lightly. Many people on the forum are still waiting their diagnosis after years of testing. Therefore, if your doctor says you have Crohn's, most likely your tests and labs provided strong evidence. I know it is hard to accept having a chronic illness,but unfortunately, Crohn's is a chronic illness and doesn't go away. As pasobuff suggested, you could be in a period of remission - where you are symptom free and feel better. However, in order to remain in remission and keep feeling good, you will need a treatment plan to keep the inflammation from coming back.
I have read many stories of people who thought they were better and didn't take medication. Sadly, it hurt them in the long run. So, please speak to your doctor about your health and treatment and be open-minded.