Vaginoscopic approach will be used for insertion of the hysteroscope in all cases (no use of speculum or tenaculum). The hysteroscope will be gently introduced into the uterine cavity after visualization of the cervix and identification of the external os. The investigators will use saline as the distension medium and the maximum pressure will be set at 80mm Hg. The uterine cavity and tubal ostia will be systematically visualized. Endometrial biopsy will be taken using a semi-rigid, double action oval serrated biopsy forceps 40cm 5Charr provided by Tekno GmbH and Co®. The most suspicious area will be identified, the forceps will be advanced and opened against the suspicious area and the tissue will be grasped, rotated 90 degrees and removed with the hysteroscope out of the cervical canal Patient's perception of pain will be assessed for each group during the procedure, immediately after and 30 min after the procedure with the use of visual analogue scale (VAS). VAS of 0 indicates no pain and VAS of 10 indicates the worst possible experienced pain. Patients will also be asked to report any side effects. The main outcome measure will be patients' pain perception during the procedure and the secondary outcome will be the adequacy of the sample.