Awww sweety. Hope you feel better. When people ask me how I'm doing, I take it as a courtesy because they really don't want to know because they are more interested in talking about themselves, which I let them. My standard response is "I'm a little rough for wear but I'm doing all right. How are YOU doing?"
I treat my bipolar condition as a "a need to know" basis. It's for me to know and none of your business.