Why didn't you lie? Or was this before all the psychoeducation that let you know what to omit, underplay and simply lie about? Despite popular fiction, it is easy enough to trick the average psychologist.

Protection against discrimination based on a disability doesn't protect against the 1000000000 things employers can easily make up as long as they get their timing right.

Bipolar disorder in the workplace means learning how to cover it up effectively and if you do say something, put it in such a way that it isn't that big of a deal, you're properly medicated and have the occassional off day like anyone else but you get to be more extreme and use bipolar as a blanket excuse. Woohoo!