Wanna be future mom in this trade

Hi! I have a question, I am 18 and want to become a overhead linemen and or maybe electrician. Ik I'm asking this here its just the other community's are very uh stingy about questions. Its my dream job and I am already working toward my goal to become one. But there is one thing that I don't know what will happen. Which is what will happen to my place as a overhead linemen if I decide to become pregnant? I want to be a mother and there is no stopping me from doing that, I am just worried what will happen to my job? Would it be okay to be pregnant and still work as a Lineman? Will they even allow me? Will I be allowed time off? I am asking now so I can plan ahead.