Bipolar. Embarrassing things you do

I was on holiday, interstate. Went off my medication for a while. I really enjoy singing but usually only do so in public when it is socially appropriate ( at a concert, karaoke, etc). Now I was waiting at a train station to meet some relations I had never met. I amused myself by learning a new song , playing it on my phone and making up a dance routine too. When my cousin arrived ( just by himself at first ) he had barely greeted me when I launched into my song and dance routine ! Later at lunch with my aforementioned cousin, his wife and brother and son I talked really quickly and enthusiastically about myself. I mentioned a couple of my high achievements ( these were genuine ) but none of them said anything in response. Some time went by after the meeting with no calls or texts from my cousin. I sent a message which I now really regret complaining that they said nothing about my achievements and suggesting the sort of things they could have said. In a roundabout way I even suggested they were unkind. I don't know if this situation can be remedied but I will send them a Christmas card with a little letter explaining that I was unwell and not myself and that I regret the text I sent and perhaps we could still keep in touch. Has anybody else had the experience of behaving inappropriately when meeting people due to illness and were you able to explain about it later ( and hopefully you received some sympathetic understanding )