question: I am 43 and my husband is 44 we have been married for 8 years since then we are trying to have a baby. We have done 7 IUI and we are hoping to do a IVF. My first question is when we have sex my husband cant realease sperm and he use his hand  for take 5 minutes to realse sperm and then he push that sperm in to mu vagina. but he has his erection but no realseing of sperm. please tell me the reason for it.