Frank, ummm, let's see, how do I put this nicely? Please do not play around with the kidney thing, please. I have seen first hand what it's like to watch your husband go from one extreme to the next. Having a doctor pull you aside to ask what your husband's last wishes are nothing I ever want to go through again much less my close friends here at NT.
It's probably nothing but a change in meds but it's not worth chancing it. At the very least, please call your doctor and let them know how your still feeling.
Don't make me come up there.