There are several possible causes for this finding. The most likely is something called a nabothian cyst. This occurs when the surface cells of the cervix block off a cervical mucus gland, leading to a collection of mucus underneath the blockage. These get larger with the ovulatory cycle, when the cervical glands produce more mucus. They are benign and do not require any treatment. However, two things that might require treatment include, first, small collections of endometriosis
on the cervix. These also will fluctuate with the menstrual cycle and can be uncomfortable and a sign of endometriosis elsewhere in the body. Finally, cervical cancer is unlikely but the most concerning possibility that must be ruled out by an examination of the cervix and probably a pap smear or colposcopy. As always the diagnosis and the management of your particular concerns will require a physical examination by your personal physician. Setting up an office visit with your OB / GYN doctor
is strongly recommended.