Toddlers stressing me out

Annelise • Mom of 5

I’m constantly yelling at my 3 year old. I also have a 4 year old. They both are testing me lately. I’m 36 weeks pregnant. Idk what to do. I’m cramping so bad and my kids won’t calm down and just behave. Running around (second floor we live on), screaming, fighting, destroying things. They haven’t ever been this bad but I can’t do it on top of being pregnant. My 3 year old drops to his knees, kicks me when he’s mad. I need a break but that’ll never happen. I just wish they would relax. I feel like the stress is gonna put me in labor or cause issues.