After the hot springs, men and women can have sex. For men and women after the hot springs, it is possible to have sex, but pay attention to do a good job of cleaning, so as not to hot spring water residue in the vagina and cause vaginitis, pelvic inflammatory disease and other gynecological inflammation, at the same time in the after sex should also pay attention to clean, sex action should not be too violent, in order to avoid damage to mucous membrane blood vessels or tissues and caused by bleeding, need to be well lubricated when necessary. If both men and women have the need to prepare for pregnancy, they can monitor the growth and development of follicles through ovulation test paper or under ultrasound, and have intercourse at the time of ovulation in order to increase the chance of conception; if they do not have the need to prepare for pregnancy, it is recommended that they use reasonable contraceptive measures, such as condoms, in order to avoid unwanted pregnancies. If a woman experiences delayed menstruation after sexual intercourse, she should be alert to the occurrence of pregnancy, and can be diagnosed clearly by using early pregnancy test or by taking a blood test for HCG at the hospital.