I asked my Dr for a blood test straight away as I thought that there would either be an increase or decrease in my HCG levels in the 5 days since my first bt, but he told me to wait until this Monday so that he can get a definite answer one way or the other. Either my HCG levels will have increased significantly to somewhere around 30000 - up from 9000, or they will have decreased a fair bit in the 2 weeks between the first bt and the second one. I guess it's the waiting that's the hard part....