Pash: I know this might sound strange but I put my HCG level data and the dates into Excel to follow their drop off (hey I needed something to do while waiting around for the next BT lol). The doctors told me they usually follow a certain drop-off pattern, like an exponential decay curve (fast drops at the start, then slower and slower). I could see that pattern with mine and it helped me see when I thought the HCG would be done to zero

Just a thought...