I was just given notice, will have worked for employer for less than 3 months and they want to enforce 18 months non compete.

I signed a contract for employment that had a non compete clause in it. I have been with the company less than 60 days at this point, and was given a 30 day notice. The company wants to enforce the 18 month non compete clause. The field that I work in has less than 5000 certified technologists worldwide. And because of who they have current contracts with, I am severely limited as to where/and with whom I might be able to get a job. Is there any way to get relief/out of the non compete? Also it was the company that terminated the contract because the business wasn't enough, was their reason.