I have just read something that has really done my head in. Apparently giving your OH oral sex before is a really bad idea, as the saliva can effect the sperm. I didn't know saliva could kill sperm?! I have been ttc for nearly a year and my OH and I love participating in oral sex blush:apologies if this is tmi) and it usually always occurs before we Could this be affecting our chances? Anyone else got any views on this?