Frustrating job

I’m a nanny and in my first trimester. I’m always so annoyed going to work the kids are so much at nap time and I’m just so unhappy and i wish i could just stay home until I’m done with my pregnancy but i really need the money especially with a new baby. I’m so frustrated and i HATE coming to work because all i want to do is take care of me and my own baby. Of course the kids are good and everyone treats me well but I’m just so not in the mood😞