Does anyone know if there is anything scientific to say that if you conceived easily first time around that it will be as easy/you are less likely to encounter difficulties second time around? I think first time has no bearing on second time around but my DH and a few friends have said they think does. I'd like to know to settle this once and for all - any studies or stats for me?? The context here is that we were hugely lucky to get pregnant immediately with DD but considering having number two and I think we can't assume it will be the same and we should start trying soon rather than later in case it takes a while.