I suppose they can't imagine what might painful for us and the probe could be painful.
Forgot to answer your question about hot baths and showers, you aren't supposed to have one the evening after egg collection, maybe in case you feel dizzy, I wasn't told not to this time and always have a luke warm wash/shower sitting in the bath to freshen up and leave the door open a bit. After transfer you should only have warm ones so you keep your temperature stable, and no jacuzzis! I think its ok during stims but I wouldn't fancy it if I felt a bit drugged up and bloated etc. What do people think?