I am preparing for an EEOC mediation. How do I determine/what can I include as monetary damages/requests and what proof do I need of them?

I was terminated, without a job for 8 months, lost health insurance which was covering my disability, and suffered incredible depression and worsening of my bipolar, which was why I was terminated. Here is what happened: I was a project manager, in very good standing with all clients as doing a superb job. However the owner constantly treated me poorly, to near torturous levels. After a particularly stressful situation, I notified the owner that I at the advice of my dr, I would be taking a FMLA leave.I am bipolar disorder II, owner did not know medical issue specifically. I asked if I could get disabilitiy coverage at that time as well, and was told they would let me know. Instead, the next day my belongings were courierd to my house with a termination letter, stating due to my "inability" to work, I was terminated immediately, as was my health and disability coverage. I have suffered irrepairable financial losses, and worsening of disability due to this.