32 weeks pregnant and babysitting

Hello

Okay so I am 31 weeks pregnant and you all know how that goes...

My brother is getting married this weekend and honeymooning for two after

Months ago my mother asked if I would help babysit their 4 kids while they are gone... I live about 4.5 hours away and would be making the trip with my son(2yr old) although now that I am actually in this pregnant body at 32 weeks I don’t want to do anything.

My mom volunteered to watch the kids along with my sisters helps. But when she heard I was coming elected not to

Take time off work to help watch the children leaving my sister and I to do the bulk of the work.

My husband really Doesn’t want me to go but I feel like I told them I would help but im gonna get stuck with the bulk of the work bc my sister isn’t used to having kids...

I really just want to stay home and not get stuck in another state for two weeks this pregnant

Anyone have to deal with this or any advice?