Hi all, thanks for the reply. i had another Bhcg done on Monday and it was 498.7 mIU/ml. my doctor did the ultrasound and didn't find any SAC. and he said that its not good because the BHCG is not doubling and he cant find the sac. so he said by Thursday if he don't find anything, i have to end my pregnancy. but im only 26 days since the transfer was done. he thinks its ectopic or the embryo implanted in the wrong place. i spotted for sometime but it has stopped now. no lower pain . im just confused to this point. did anyone experience this before? and what was the outcome? should i prepare for worse. we have been trying to have a baby since 2007.