I have seen my midwife this afternoon and have been measured 40cm (im 35 weeks) the midwife mentioned a large baby, which was not unexpected as my other 2 were big babies but also the possibility of polyhydramnios which i stupidly googled and am now really worried 
I have a scan next tuesday but in the meantime if anyone has any positive stories related to this i would be really greatful to hear them.