If the period is not cleared after 9 days, in the vast majority of cases clinically it is caused by insufficient hormone levels, such as insufficient estrogen levels, the endometrium is not able to repair as quickly as possible and the period will dribble out. The following conditions can also clinically cause a period to be unclean for 9 days, such as a pregnancy with a pre-eclampsia, which often starts to look like a period but is actually a pregnancy, so a urine HCG test is done. Inflammation of the endometrium, due to the brittle tissue, can also cause a dripping period, endometrial polyps, and submucosal fibroids in the uterus can cause a longer period. Once your period is not cleared for 9 days, you must go to the hospital for examination, for example, ultrasound should be done to rule out organic uterine pathology. It is recommended to do a sex hormone six test to find out if the endocrine secretion is normal.