One is called The Training by Ninja posted way back in the old days of 1999 or 2000
Second is about a mother who is trying to get her daughter preggers with out her knowing it..The whole time mom is telling the girl what not to have happen during sex, she's doctoring the condom , cutting the center out of the diaphram,helping to insert it with a coating of sperm, and after the deed is done , using a second diaphram, coated with more sperm, to hold things in..the girl is unaware what mom is doing , the guy is along for the ride...possible intrr story??