I agree with Hayles, Janna - keep it all until you know for certain!
I too, have heard from many ppl that when you are done having babies you definitely know you are done, but give it some time after this bubby is born before you will know too I reckon, I have a friend who has 2 boys and she was adamant that they were done while she was preggars and even afterwards for awhile, her hubby even has the referral to get his big V done but they havent booked it yet cos here 7 mths on they are not sure they want to finalise it.
I will be storing again after this one, cos we are pretty sure we are having 3, lol.
That is always possible to get changed to but at that has always been our magic number and still is atm!