So frustrated... work issues, pregnant and reduced hours.

I’m 35 weeks pregnant and been on reduced work hours. I normally work 12 hour day/nights. I’m reduced to 10 hours now. I still rotate between days and nights. It’s been nothing but a headache and stress coming into work because someone has to cover for my two hours. Usually there is nothing to do in the first two hours and if there is, it’s very easy work. People are complaining nonstop. It’s not like they can’t do two jobs because it’s extremely easy work although I understand they don’t HAVE too. Normally a group leader would fill in but there’s another person missing so he does their work first. These people never Harrass or complain to me face to face but I hear about it and it’s stressing me out to the point I just want to start my maternity leave. What would you do? I haven’t went to a supervisor or anything cause I don’t want to complain either and more than likely they won’t do anything.