hmmm yeah i guess it could be all of these things, i'm not particularly gassy though, well no more than usual anyway. I guess having a baby growing in your belly for 9 months just makes things sit in a bit differently afterwards. DS was very unplanned and undiscovered for 20 weeks, so I guess part of me is very paranoid about never letting that happen again! Every little funny feeling I buy a test I need to chill out