Yes.
If you google that question, I'm sure you will see a bunch of people with the same condition. It's not abnormal in the least.
I knew someone before who was so nervous and obsessed over the thought of choking that he had just stopped eating and drinking entirely-- and got sick because of it, of course.
If you aren't on any medication to lessen your obsessive thoughts/anxiety; I would suggest you look into trying some out to help.
If you *are* on something; contact your doctor and let them know about your trouble swallowing so that you can adjust the dose.