Abnormal cells found on the cervix during a cervical screening test are usually at an early pre-cancer stage and don't cause any symptoms. Treating the abnormal cells prevents cancer from developing. If abnormal cells do develop into cervical cancer you may have symptoms such as abnormal vaginal bleeding e. g. between periods or after sex, smelly vaginal discharge, discomfort during sex or sometimes vaginal bleeding after the menopause. These symptoms aren't always due to cervical cancer but if you have them, you should visit your doctor.
Attribution: BUPA