Working vs SAHM

I currently work full time. I have 2 sons, a step daughter & I'm currently 18 weeks pregnant with my daughter (yay!) My boyfriend has a job doing snow shoveling in the winter & landscaping the other seasons. He starts working nights next week at another job. Now I'm debating on continuing to work once our baby arrives or becoming a sahm. I'd love the fact that I'd be able to be with my kids everyday & not miss out on their milestones and achievements. But I feel like I would go crazy being in the house all day with FOUR kids lol Trust me, I love my kids but there comes a point that sometimes you just want to pull your hair out lol Plus, I've never been the type to ask other people for money. I like having my own & I like to help contribute to bills and such. What are others people opinions on this??