Maybe it could denote a very quick delivery. I think 8oC could mean the actual birth (the baby leaving your womb), also isn`t there some moonphase on the 8 of cups card? Maybe the delivery takes place during that phase of the moon. OH and lunar return replicating natal angles is said to herald a significant month in a year.
Thanks lumina - my last was quite quick, there is possibility of me having a c section this time round. Those that are scheduled usually happen a week or so before the due date (I think) which would fall into the above LR. Yeah the moon is in my 8oc card