Hello doctor, I have tried ivf 2 times, first time 5 eggs retrieved only1 fertilized with ivf, icsi were not successful, again next time 6 eggs retrieved and3 were fertilized thru ivf and 2 were cleaved to become a grade on day 2 and I1 fertilized thru icsi with b grade, but they were transferred on day 2 ,I would like to know please next time what would be the best whether ivf or icsi and what might be the cause for low succession icsi, is it aproblemwith the egg or sperm,my husband is a smoker, finally b-hcg became less than 1. Please respond to my questions. Anxious to know, thank you for your help.