question: Hi, after embryo transfer , on day 7 and Day 9 the BHCG level was ZERO, does this means there is a problem in the transfer itself? I’m 40 years old and I have 3 girls and I’m looking for a baby boy!!! This is the second try, the first one, the BHCG level was increasing from D4 to D9 and then it got dropped in D12 Any reasons for that? Specially transfer operation itself??