Or erosion of the cervix is caused by contracting chronic infections, unusual pH balance, an increase in estrogen levels, and traumas, among other causes. It is an inflammation of cervix cells, which is caused when squamous cells in the opening of the urinary tract turn into columnar cells. While there are generally no symptoms associated with cervical erosion, some women may experience abnormal bleeding that is not part of menstruation; bleeding after sexual intercourse; bleeding between periods; a clear or yellowish vaginal discharge that has no odor unless a vaginal infection is also present.