Hello, The reasons for bleeding after intercourse are often due to benign conditions like cervical polyp, cervicitis (infection of the neck of the womb) cervical ectropion (epithelium lining cervical canal protrudes out a bit) vaginal atrophy, foreign body, etc. Sometimes it is due to causes of concern like precancerous lesion of the cervix or cervical/ vaginal cancer. Since you have been examined by a doctor and also had colposcopy most of the benign causes are obviously excluded. Do you have regular cycles? Do you have unprovoked bleeding in between cycles? Do you have any bleeding disorders? Are you on blood thinning medications? Are you on oral contraceptive pills? In this case sometimes there is cervical ectropion due to estrogen content in pill. This epithelium is delicate. It can be injured during intercourse causing bleeding. Though rare it is important to exclude precancerous/ cancer lesions by biopsy. Let us wait for the result. Please note that in more than 50% of cases no cause will be identified after all these investigations. In such a scenario the bleeding usually resolves in few months time. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Iven Romic Rommstein, General Surgeon