Hey - just thought I'd let you know you aren't alone. I got an MS in Audiology. I really enjoyed the field but wanted to be able to do more. When I applied to med school, I think having the MS helped and it showed I had allied health experience. I also thought about going ENT, but have since decided to go into internal med. However, when I did my ENT rotation, all the ENTs thought my background was wonderful and that it would help if I decided to go into ENT.
Hope this helps! I would finish the degree if I were you (try to make some contacts along the way)
Jennifer