If your period ends but later that day you start bleeding what could be wrong?

- Ovulation bleeding: Around the time of ovulation (when an egg is released from the ovary), some women experience light vaginal bleeding called "mittelschmerz." This typically occurs 14 days before the start of your next period.

- Implantation bleeding: When a fertilized egg implants into the lining of the uterus, it can cause some light spotting. This usually happens 10 to 14 days after ovulation.

- Breakthrough bleeding: Sometimes, hormonal imbalances or certain medications (like birth control pills) can cause breakthrough bleeding, which is bleeding that occurs between periods.

- Injury or trauma: Injury to the vagina or cervix, such as from rough sex or a pelvic exam, can cause bleeding outside of your normal menstrual cycle.

- Sexually transmitted infection (STI): Some STIs, such as chlamydia and gonorrhea, can cause abnormal bleeding between periods.

- Underlying health condition: In some cases, irregular vaginal bleeding can be a sign of an underlying health condition, such as uterine fibroids, polyps, or thyroid problems.

- Recent use of hormonal contraception: If you recently started or stopped using birth control pills or other hormonal contraception, this could cause irregularities in your menstrual bleeding patterns.

- Cancer: In rare cases, irregular bleeding can be a sign of cancer of the uterus, cervix, or vagina.