Hello dear I understand your concern Pink vaginal spotting after sex does not indicate the pregnancy. It could be minor trauma to cervix/vaginal venous plexus due to less lubrication during sex or vaginal infection like bacteria vaginosis. Take sitz bath in warm water and ensure that there is proper lubrication before sexual intercourse. Bacterial vaginosis can be diagnosed by the vaginal swab test. It require clingen suppository and vagisil cream to treat it. If It will ocuur in future then it could be cervix/endometrium dysplasia or polyp. PAP smear and USG scan help to diagnose by consulting the gynecologist. Maintain proper pelvic hygiene before and after sex. Take healthy diet and drink plenty of water. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar