Go to nursing school. Two children are enough. Really. You might not think so now, but they are more demanding, more financial burden, and require more supervision to stay on the right track as they get older and peer pressure starts to influence them more than parents do. My mother had three children and worked full time. She definitely did the "second shift" thing all her life, running on only 5-6 hourse sleep at most, every night, for years. My sister has three kids, and her husband lost his job, cashed out and spent his retirement, is now morbidly obese, and he refuses to go back to work. He also does not do any of the household scutwork, ever. they have 3 kids in college now, and two mortgages she is paying on, their vehicles are rebuilt wrecks that my nephew bought at scrap yards and put back together, and my sister works a fulltime regular job as RN plus all the per-diem work she can get, and now all the weekend private-duty work she can get. She is the sole support of her family. Now, think about how much lighter her burden would be if she had stopped at 2 kids: One is 25 and almost out on his own, has skills to support himself if he needs to, and one that's 22 and almost done with college now.
I have no kids, because I wasn't motivated when I was younger and then couldn't have any later. I am perfectly happy with that, LoL. But long before that, I took a good look at Mom and Sis and their grueling lives, and their husbands that didn't help much, and I said that I'm definitely going to be a None-To-One-And-Done kind of gal.