Don't stress about the size guys really... if I could have a dollar for how many times I have heard an estimate of a 9lb'er-10lber and out shoots a 6lb baby... ARGH! It's not what you got, it's what you do with it! E.g. read New Active Birth and find out how you can make 30% more space in your pelvis when giving birth!!! Lying flat on your back in bed is one of the worst thing you can do in labour!!!