Hi, Welcome to HCM. Retroverted uterus doesn t cause infertility. But sometimes associated endometriosis can reduce fertility. If you have no symptom of severe pain during menses/during intercourse (which rules out significant endometriosis), there is no need to worry for that. Also 5 months is a short duration to think of infertility. Continue to try naturally unless there is some reason to worry (retroverted uterus should not be a reason for worry). Hope this helps. Regards.