I'll just wait and if they don't have one I can get my mother in law to get it.

You can bring anything. If your heart rate or babies heart rates are dropping or rising they will make you stay in bed though

I brought mine and my husband blew it up when I wanted to bounce on it.

I would ask your hospital because I know some don't let you bring some stuff. And if you ask they might just have one there that you can use so you don't have to drag your ball with you.

Some hospitals have their own

That's probably up the hospital.