Around 12:45 or so I tried to self hosp with a wrong bloodbag. My HP dropped to 1, I assumed it had worked, and carried on, then a few minutes later I noticed I was out of the hospital. I clicked on the wrong bloodbag again and my HP dropped to 1, but I had the error message "something has gone wrong". I presume the message was there the first time too. I tried a couple more times, then asked people to check if I was in the hospital (no) or if someone was attacking me (also no).
In the end I had to use an SED, which I'd rather not have, since I only needed 20 minutes hospital time.
I didn't check it with scripts turned off, because I was hurrying and panicking, on 1 HP with bazaar and item market open and loaded and a lot of money on hand.