Dyspareunia or pain during intercourse can also be a mechanical cause for infertility. this could be due to tight or narrow introitus or rigid hymen it can also be due to thick hymen. Vaginismus can also cause dyspareunia.these simple issues need to be addressed as part of infertility treatment . Vaginal septum can also cause dyspareunia. Removal of the septum can help the patient to conceive.