This may make love making boring....but my husband and I have sex at night before we got to bed. This way there is no getting up....just rolling over
Depending on what you read, some experts say that it takes sperm 6 seconds to enter the uterus (preventing some sperm from leaving the vagina) and some experts say it takes only minutes. After "doing it" just lay there for a while and keep your bum elevated on a pillow if needed. Good luck!