Mar 15, - 02/8Vaginal changes. VAGINAL CHANGES: The elasticity of your vagina changes after you start having sex. Since the vagina is still getting used to this new activity you have introduced to your body, it takes some time for the vagina to become used to penetration. However, this gets better with time. Mar 8, - Losing your virginity: if you're thinking about having sex for the first time, read our tips & advice to make it a safe & enjoyable experience.