Help!

So I'm due to have my son in February and I'm planning on breastfeeding him. I don't know if this is a dumb question but should I pack my pump in my hospital bag? He's going to be on the breast in the hospital but I also have a procedure that I'll be away from him for and even though it should only be like an hour sometimes there's something unexpected and it takes longer to get back to the hospital room and I don't know if I should plan on pumping in case he gets hungry while I'm in the OR.