My husband and I are on our 2nd month of trying, but he doesn't know I'm <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> and all that. He's under the impression that we've just pulled the goalie and are seeing what happens. So anyway, I do t want to be super obvious and prop myself up on a pillow with my legs in the air after sex. Any tips to keep the sperm in longer??