Absolutely not a reason to feel stupid, this is a very good reason for a scan. Especially given your history of this starting out as a twin pregnancy (I wonder whether there is any link there between that and the bleeding?). Hope it all goes ok and sorry you’re still having to deal with this, bleeding in pregnancy is just awful for anyone, always worrying for mum no matter how many scans!
All this chat about incorrect sex on scan is making me paranoid
told boy at 20 week scan and never been told anything else about the sex at my 2 growth scans, but also think asking at 38 weeks may be tempting fate and better to just leave it lol! I DEFINITELY saw a penis though. I knew it at the start of the scan and she didn’t address sex until the end