If you are 1.5 months pregnant and have vaginal bleeding after intercourse, you should go to the hospital in time for checkups, such as ultrasound, gynecological examination and other items, and if it is a pre-eclampsia, cervical polyps, vaginitis and other illnesses, you should be treated symptomatically. 1. Pre-eclampsia: Sexual intercourse may induce contractions, thus causing pre-eclampsia, the symptoms of which are mainly vaginal bleeding and lower abdominal pain. If the ultrasound shows normal fetal development, blood HCG and so on are normal, it is recommended to rest in bed, if necessary, oral dextroprogesterone, vitamin E capsules and other anti-fetal treatment; unsatisfactory examination, suggesting that it can be developed into a difficult to avoid miscarriage, can be followed by the doctor’s advice to clear the uterus. 2. Cervical polyps: caused by chronic cervicitis, gynecological examination of the cervix can be found in the cervix, polyps rich in capillaries, after sex or gynecological examination can cause vaginal bleeding. In principle, cervical polyps are not treated in early pregnancy, pay attention to personal hygiene during bleeding and prevent infection. 3. Vaginitis: due to low immunity and increased secretions during pregnancy, vaginitis is a high incidence of people in the microbial stimulation of the vaginal mucosa can be congested, edema, or even ulcers, coitus due to friction can be caused by bleeding, bloody secretions and other manifestations of vaginitis according to the causative organisms of the different choices of metronidazole, clotrimazole and other treatments. Therefore, to identify the cause of bleeding during pregnancy is the key, treatment should avoid coitus again, and keep the vulva clean and personal hygiene. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor symptomatic treatment.