Hi Doctor, I m a 36 years old male and my wife is 32 years old. We are going through IVF treatment and this is our 2nd cycle. She had her transfer 2 weeks back and yesterday went for the pregnancy test and came out positive but today she had an appointment with her doctor and she was saying the number 16 she had was low for an IVF treatment where it should be above 100. She s saying that the semen sample I gave was stinky. I ve some questions regarding this matter. 1) Does semen being stinky affect the fertilization? 2) They retrieved 8 eggs from my wife and with my stinky semen produced 5 good embryos (3 with 8 cells and 2 with 7 cells). Since 5 embryos were produced it seems the stinkyness of the semen has no effect? 3) They wash the semen and said the movement of sperms were good before doing the fertilization so I don t understand that now they say everything else was good both partners weren t sick during the transfer and all went well except the semen sample I gave was stinky. I don t believe their reasonning and let me to think that they are looking for excuses. 4) Just up to 3 days before producing my semen sample, due to a dental treatment I was taking an antibiotic capsule for 7 days and I m wondering that was the only difference compare to previous sampling. Just couple of months before the treatment started I gave a sample for analysis and told all good and I didn t drink coffee or anything that would affect the semen for a month until the transfer is over. So wonder if this could be the reason and if so again does that has a real effect on getting pregnant after the sample produced good 5 embryos? I would appreciate some inside into it and if this cycle isn t successful, I would be even more careful and what should I do to be better prepare for the next cycle in food and health? thanks, Bala