I don't know if anyone has mentioned this before but thought I would pass it on. Now I have just been talking to this lady who was having trouble TTC. Her and her husband had been trying for 2 years and they had tried everything possible (except IVF) and she heard through the grapevine that another one of her friends who was also having trouble had recently got pregnant. She called her up to congratualte and get tips and she said she thinks what helped is that she didn't tell her husband she was ovulating and 'seduced' him when she was.
Apparently when men feel pressure to perform they excrete some kind of acid or something that can harm sperm mobility so if they don't feel any pressure it can help! She tried it and got pregnant her next cycle- she passed it on to her friend who was also TTC and it worked for them too.
It could of course just be coincidence but its worth a try- and I don't know about you guys but when I think about it it must be hard for the guys thinking in the back of their head that you only want to have sex with them to make a baby. We finally get to start trying again this cycle so this week I am seducing my husband!
Fingers crossed!