Tsf - It is 3 days apart but my hcg is low (cannot recall the numbers for 5 days transfer according to my TCM) when I was tested positive at first. For the reason, PC cannot explained the actual reason but it could be one of the followings - the fertilized egg did not attach itself to the uterine wall, chromosomal abnormalities, etc... Even though I did recover from the loss, my phobia that it will reoccur again still exist in my heart. But I know it is important to stay positive as I have done my best in the current FET. So I have to believe in miracle and wait patiently for my report card. Same go to you, Tsf.