Kegel exercises help to increase sexual response and satisfaction by strengthening the pubococcygeus PC muscle, which forms the pelvic floor and supports the pelvic organs. Cervical mucus appears sticky and thick; mucus gradually becomes thinner and whiter Days For more Sex vejina black spem on how to locate and exercise the PC muscle, read this article! A female is at a higher risk for contraction if she has a weak immune system. These exams can show you the physical changes that occur throughout the menstrual cycle. They all trap sperms,restrict their natural movements and affects fertility.