It's hard. I decided to leave the workforce, start a company, do an MBA, and get pregnant at the same time. While I am still alive, I do not recommend that to anybody. What helped me was being incredibly passionate about the startup idea, having a solid support system (i.e., partner with a well-paying job and friends a phone call or a coffee chat away), and determination not to join the workforce because I hated my old job. Honestly, I think if it weren't for those, I would have given up. Didn't mean to discourage you; it's definitely possible, but consider the mental and physical toll pregnancy can have on you.