"...and I'll hopefully be in and out."
If you are having biopsies taken via a hysteroscopy, the appointment will likely take longer than you think.
The clinic may be running late. There will likely be an initial discussion with the consultant or member of his/her team. Then you'll be asked to sign a consent form. Then you will be taken into the procedure room and asked to remove just your lower clothes and underwear or change into a gown. Then you'll be positioned with your legs up on leg rests. You may be given the opportunity to watch the procedure on a screen near your head. You might have some local anaesthetic administered or your clinician may carry out the procedure with no local anaesthetic.
It may be painful or you may tolerate it well. Then you'll get dressed again. You may need to sit quietly for 10 minutes before you leave the hospital or clinic as you might feel faint or a bit wobbly (the procedure can result in a sudden drop in BP for some women). It's also a "wet" procedure because saline solution is introduced into the uterine cavity to expand the cavity for enhanced visualisation and this fluid will leak out of you as soon as you sit up. If you are having the biopsy because you have unexplained uterine bleeding, you may find this fluid is mixed with blood and you'll be mopped up by a clinic nurse or be handed paper towels to mop up with.
If you are having it done via hysteroscopy, you should have been sent a leaflet describing the process and advising that you take painkillers before you leave home.
I've had several hysteroscopies where biopsies have been taken and I would not want either a mobile 3 year old or a child in a pushchair to think about while I was having this procedure.
If you are having an endometrial pipelle biopsy, this will be likely be a faster procedure than a hysteroscopy as no camera is inserted through the cervix. But not everyone has a cervix that will readily allow the easy passage of a pipelle. So they may have to do a hysteroscopy instead if the pipelle cannot be passed.
Either way, I would not want a child in the room.