What are these?

Sierra • 33 💍💎Married 💎💍, Angel Sydnei in heaven 👼🏽, Rainbow baby boy October 2018 Robert iii👶🏽, Rayegan Joy die October 2020

I'm 3 months postpartum and these bumps are popping up everywhere! Stomach, legs, back, neck, etc. They itch like mosquito bites. What do you think they are?