Recently diagnosed with Lupus which affected my memory and now recieved a bad performance review and I feel I need accomadations I am not sure where

If your company has a human resources department, you need to contact them first. Explain your medical condition and request to have accomodations that will allow you to improve your performance at work. From there, be sure to document all of your interactions with your manager, particularly the one who gave you a poor review. Do your best at work, but it would be in your benefit to let your employer know about your condition and need for accomodations so that they may be less likely to terminate you.