Hello, thanks for using HCM. Bleeding during or after sexual intercourse is abnormal and should prompt appropriate diagnosis as causes appear to be serious and range from trauma through infections to more serious causes such as cervical cancers. Possible causes include; cervical cancers, cervicitis ( inflammation of the cervix ), other genital tract infections such as with Chlamydia, Gonorrhea and yeast infections vaginal or cervical polyps, trauma to vaginal wall Vomiting could be associated to the underlying cause of the vaginal bleeding in which case will mostly be an infection. However it could still be related to a different cause, what you ate, parasitic worms or simply just occur without any underlying medical condition. It will be necessary to see a gynecologist for a speculum exam, visual inspection test with lugol and acetic acid to rule out cervical malignancies and bring out an appropriate diagnosis