If the leucorrhea increases and the abdominal pain is small, it may be caused by the following reasons: 1. most commonly caused by pelvic inflammatory disease; 2. caused by uterine fibroids; 3. caused by pelvic tumors; 4. can also occur after pregnancy, often caused by pre-eclampsia; 5. endometrial cancer and cervical cancer may lead to increased leucorrhea and abdominal pain. It is recommended to go to the hospital for gynecological examination and, if necessary, blood tests for HCG and progesterone to find out whether you are pregnant and whether you have a pre-eclampsia miscarriage, as well as ultrasound examinations.