31 weeks pregnant and exhausted

I'm 31 weeks pregnant and I'm already so tired of being pregnant it was a nice experience but now I just want my son here I still have at least 6 or 7 weeks til I'm considered as "full term" but 9 weeks til my due date. Everything is irritating me even little stuff, I'm always going to the bathroom I stay hungry, I feel like a cry baby, my body hurts and I am working full time at the airport cleaning planes and doing security searches. I am over this 😫🤒😴😡