oooooooooooh if i had my time over i'd just relax on the off days and cuddle my bundle and do whatever makes me feel better..... once they are a bit older you really can barely get away with having an off day, so just kind of try to enjoy them (i know thats an odd thing to say) while you can.... once they can talk you don't get much time to think about how off you are feeling! toddlers don't allow much self indulgence ;-) in fact they don't allow much of anything unless it is about them them them! play school and kids dvd's on off days are an absolute godsend.

i also second going for a walk and getting fresh air... i went through an OFF WEEK, seriously i was so down and we had the television on almost non stop with me on the couch being a misery guts... then i happened to buy a new pram and got out walking a bit more and it totally snapped me out of my funk.