I work full-time but I am on intermittent FMLA. I go thru the same problems as you do. I'm so up and down. I get irritable, can't stand to be around people at times, can't focus, memory issues, etc. I feel awful and guilty when I miss work, but I don't know what else to do. At times I just feel like I can't do it. My husband works with me, so when it is bad my way of managing is going to him to rant about my issues, but I'm lucky in that sense. Sometimes I have to go in the bathroom and just cry about it when I am alone. I don't know if this is how one should manage, but I know no other way.