Where I come from, STD stands for 'sexually transmitted disease'. On reading your topic title I was already admiring your chutzpah in not only admitting the nature of your ailment but setting out to parlay it into some kind of an entitlement ...
I'm so glad I'm not the only who thought that when she saw STD.
I agree with Toots. Once someone holds a date in my calendar, either formally or informally, I think I am entitled to updates. Given the pandemic and all that people are likely dealing with, I'm less expectant of updates but still think it's appropriate to get some sort of update, even if it's just a social media posting.