I think it depends on your previous tests, if you are at risk, how frequently you have had them etc. Even so I left mine til after bubs was born and I had treatment from CIN2 and CIN3 cells prior to getting pg. I think the other reasoning is that if they find abnormal cells that need treatment they won't do it while you are pg anyway?? Maybe have a chat to your gp about your concerns and postpone it for your post birth check up hun. coxox