Thanks for asking the question as I too are thinking of going from 3 to 4 I have my days where I really really want to then some days where I am scared *****less thinking how could I be so lucky to have another happy heathy baby would I be tempting fate by going again? As you can tell I am no help to you what so ever as I am going through the samething but thought I would reply so that I too can read through all the answers you are getting...Good luck with your decion I 'think' for me I am going to tempt fate once move are have another but wont start trying until next year...