My wife has me use her speculum regularly to check her cervix to determine the dilation status of her dome. This is an excellent manner to determine her fertility status because a cervix opening that is too “friendly” to the passage of sperm can lead to a pregnancy that could alter a shared wife’s sex life. My wife enjoys the sensation of semen flooding her vagina and she really doesn’t want it to fulfill nature’s intent for reproductive fluid because it will most likely be from a lover’s nuts I’m very attentive to her fertile cycle when we have sex to avoid fertilizing her.