I was Retaliated against after complaint of Age Discrimination

I believe this falls under Retaliation? does that also mean I may have a wrongful termination suit as well regardless of the "at will doctrine" ? I am currently filing a formal complaint with the EEOC for retaliation It is my understanding through research this is required by law the first thing I must do. I have kept great records and there is a lot of information that is obviously too long for this forum.