Flushing the pipes

Today we were struggling with the issue of how many days DH should "flush his pipes out" before egg collection. Four seems to me like the perfect time to leave it as current thinking indicates between 3 and 5 days.

However, researching it I found that 36 hours is fine, and that now the thinking is not to leave it longer than 3 days. Could this be true??

We just did the deed tonight, which means if I trigger tomorrow (which is what we assume) then DH's sperm will be 2.5 days old at the time of egg collection (conception). We're quite anxious about this because we don't want ICSI, so the sperm have got to be as good quality as possible for IVF. Also, sperm quality is our stumbling block (as well as my age!) because he had a vasectomy for 24 years.

Poor DH really dislikes having to do the deed on EC day, and I can understand this. It's humiliating (in a different way to what we women have to go through) to have to produce on demand in that little room with people all talking and walking around normally outside.

But I have to inject myself with drugs every day, several times a day, and drink litres and litres of water, and constantly be near toilets. ETC. It's so uncomfortable when travelling to always desperately need the loo. And the train toilets are always rather unsavoury... And I have to travel every single day - up to the clinic and back.

Today I had a blood test in the morning followed an hour and a half later by a scan. Then a I had to return for a blood test in the afternoon and another scan, performed by Mr T himself.

Tonight I have to take just 25 iu of Puregon. We think I will trigger tomorrow evening.