At pap smear appt my doc said cervix was blue but the pregnancy test negative What could be wrong?

There are a few possible explanations for why your cervix may have appeared blue during a Pap smear, despite a negative pregnancy test result:

Cervical ectropion: This is a condition where the cells that normally line the inside of the cervix (endocervical cells) extend onto the outer part of the cervix (the ectocervix). These endocervical cells are thinner and more fragile than the ectocervical cells, and they can appear blue or purple under certain lighting conditions.

Congenital anomalies: Some women are born with a bluish cervix due to a variation in the development of the cervix. These variations are typically not harmful and do not require treatment.

Infection or inflammation: Certain infections or inflammatory conditions of the cervix can cause it to appear blue or purple. These include conditions such as cervicitis (inflammation of the cervix), trichomoniasis (a sexually transmitted infection caused by the parasite _Trichomonas vaginalis_), and chlamydia (a sexually transmitted infection caused by the bacterium _Chlamydia trachomatis_).

Vascular congestion: Increased blood flow to the cervix can cause it to appear blue. This can occur during pregnancy or as a result of certain medical conditions, such as pelvic inflammatory disease (PID).

Medications: Some medications, such as certain birth control pills, can cause the cervix to appear blue.

Recent injury: If the cervix has recently been injured, such as during childbirth or a miscarriage, it may appear blue due to bruising or inflammation.

It's important to note that a bluish cervix is not always a cause for concern. However, if you are experiencing any other symptoms, such as abnormal vaginal bleeding, pain, or discharge, it's important to see your doctor for evaluation. Your doctor can perform additional tests, such as a colposcopy, to determine the cause of the blue cervix and recommend appropriate treatment if necessary.