People who have completed their families tell me you just know when you're done. I have a friend who got her tubes tied at the age if 25 after having 2 because she just knew, and another who after her third fell pregnant and terminated (despite being dead against abortion) because she was just so sure she was done at three. After our third I knew I wasn't done but my husband said no more so I just left it to fate/God, was very clear I wasn't on any birth control (never taken it anyway) and that he needed to be careful if he seriously didn't want more. Well, im now pregnant with twins lol! I'm hoping newborn twins does it for me coz I still feel sad at the thought this will be my last pregnancy . Regardless though, my husband will get the snip after they're born so it'll be too bad if I still want more.
I honestly didn't find the jump between 2-3 that big, finance or coping-wise.