Vicki,
Not being a lawyer, I really don't know if your treatment qualifies as discrimination, but strickly from a lay person's point of view it sounds like maybe.

You should call a lobor lawyer. They would probably do a consultation for no fee and if it turns out it is doscriminsation may very well take the case on a contingency. In any event it won't hurt to call.

Wish I could be more help.
Pam