For a woman to be comfortable during intercourse, it is important that her vagina be adequately lubricated. Lubrication is not instantaneous, sometimes taking several minutes, which is why it is a good idea to enjoy foreplay before penetration. If natural vaginal lubrication is inadequate or takes too long, a water-based vaginal lubricant can ease the process. When penetration takes place before the vagina is well lubricated, it is possible to suffer small cuts and tears which may produce bleeding. These cuts and tears take time to heal. While this is generally nothing to worry about, if bleeding persists you should consult your physician.Read the entire article here: Q&A: I Had Quickie Sex, Now I’m Bleeding