Discrimination, retaliation for FMLA or harrassment?

Is this discrimination,retaliation for using FMLA or harrassment?
I have several medical conditions that cause me to miss work on an intermittant basis. I have been employed with a local government agency for 8 years. Two years ago I got a new supervisor. After the super found out about my medical needs I was required to complete additional documentaion of sick leave, required to use a time clock when no one else did, denied a flexible schedule - which I had used in the past, and reprimanded for excessive absence. When I was hired I checked YES on the form that asked if I needed ADA accomodations. My super never informed me that I might need FMLA for some of my leave time. After the reprimand I requested FMLA at my Dr.'s suggestion. After that my super became abusive, made snide comments, whispered about me to co-workers loud enough for me to hear, put on probation. Now, 9 months after requesting FMLA the agnecy Director sent a letter to my Dr. asking for detailed information about my condition - without my knowledge.