The first sexual precautions include the following: 1, keep a calm mind, do not be overly nervous, this is an integral part of the road of life, but also a step towards maturity; 2, keep the vulva clean, avoid coitus during menstruation, on the one hand, can prevent retrograde infection; on the other hand, can prevent the pelvic endometriosis caused by menstrual blood reflux; 3, to pay attention to contraception, if there is no short-term The first time you have intercourse, the hymen will rupture and bleed, and a small amount of bleeding is normal. However, if there is a lot of vaginal bleeding and dripping, you should consult a doctor in time to exclude the vaginal wall laceration.