Do I have Chairi Malformation?

I recently did some head and neck exercises and at the lower back of my head I felt a crackling sensation. I noticed it when I turned my head round and mainly tilted my head so it touched my spine when I moved it around. I googled this information and it turns out a lot of people have experienced this, but then someone said go and have an MRI scan immediately it could be this chairi malformation disease and can cause a bbrain hemmorage. So I've panicked now, thinking I have it. Is it likely that I have this disease? And should I see a doctor?