Mildred, it might be advisable to tell your employers that at the time you were hired that your condition was not an issue as it was controlled and that right now what is happening is basically a bad reaction to stress. That is more or less the truth. With proper management of stress at work it will probably calm down again. What does your counselor suggest?
I find that the stress explanation tends to normalize the bipolar thing a great deal for people who otherwise don't understand it very well.