The use of lubricants can affect pregnancy because they contain chemical components that tend to have some effect on sperm and can also have a negative impact on sperm quality, so it can affect pregnancy. Lubricants are used to prevent vaginal dryness. There are many causes of vaginal dryness, including vaginitis and vitamin B deficiency. If foreplay is not done well during intercourse, vaginal discharge will decrease, which will cause dryness and pain during intercourse, and vaginal dryness needs to be examined in hospital in time to identify the cause and then treated reasonably. Vaginitis can be treated with metronidazole suppositories or clotrimazole suppositories. Vitamin B deficiency requires eating foods with more vitamin B, such as beans, mushrooms, fungus, etc. Talking about sex during intercourse can increase sexual desire and vaginal discharge.