I always get the "how are you?"s & the looks of concern if something agitates me, as any sort of anger is instantly interpreted as "bipolar rage", as opposed to honest, appropriate response. I know it's genuinely meant, but people don't realize how often they do it. And nothing seems to mess up a good day better than someone saying "you doing so much better"
The hardest part for me was dealing with the fact that every argument you've ever had, or anything that's gone wrong in your life is now solely your fault. Everyone gets a free pass when it comes to fault or complicity once you are diagnosed BP, because it was clearly your illness that was at fault. This took me a long time to accept, because, it's never going to change. Even if it's not spoken, every argument you have and any emotion you show will be your fault, from now on, which is not awesome.
Anyway, I feel for you. I wish I could say it will stop, but it seems to me that a diagnosis gives everyone permission to say anything they want, and if you have a problem with their advice/criticism, well, that's just your illness talking.