Much, much more information needed before it can be concluded that anything illegal happened, or what your options are if something illegal did.
There is a reason for each and every one of these questions so please answer exactly as asked.
1.) How long had you worked for this employer?
2.) How many employees did the employer have within 75 miles of your location? If exact number is not known, over or under 50 will do.
3.) Between January 2015 and January 2016, did you work a minimum of 1,250 hours for this employer?
4.) How long did your doctor anticipate that you would need to be out of work?
5.) What was the nature of your disability?
6.) Was it anticipated to be a short or a long term condition?
7.) What are your primary job duties?
8.) What state are you in?