NJD: Thanks so much that is all the type of info i am after and it all makes total sense. Im actually abit of a gym junky and stopped for a little while because i got hyperstimulation from the ivf meds i started back for about 4 weeks but my 12 week scan showed my placenta was lying very low and i have had some spotting, so my ob has banned the gym in the meantime but hopefully they will let me back soon, BUT i will keep walking. Sorry to keep buggin you but what pregnancy books did you have i just cant seem to get any info, i think i must be looking in the wrong place!? Once again thank you.