### Possible Causes of Right-Side Abdominal Pain and Menstrual Delay #### Symptom Description Based on the symptoms you provided, you experience pain when pressing on the right side of your navel, and your period has been delayed by about ten days, accompanied by brown discharge. These symptoms may be related to various gynecological issues. #### Possible Causes 1. **Ovarian Cysts**: Ovarian cysts can cause pain on one side of the abdomen and affect the menstrual cycle. 2. **Endometriosis**: This condition can lead to abdominal pain and irregular menstruation. 3. **Pelvic Inflammatory Disease**: Pelvic infections can also cause similar symptoms, including abdominal pain and menstrual irregularities. 4. **Early Pregnancy Complications**: Although you stated you are not pregnant, it is advisable to take a pregnancy test to rule out early pregnancy complications. 5. **Digestive System Issues**: Certain digestive problems, such as appendicitis, can also cause pain on the right side of the navel. #### Recommendations 1. **Consult a Gynecologist**: It is advisable to visit a gynecologist for a thorough examination to determine the exact cause. 2. **Imaging Tests**: Ultrasound scans can help identify ovarian cysts or other pelvic abnormalities. 3. **Blood Tests**: To check for infections or other blood abnormalities. 4. **Pregnancy Test**: Even if you believe you are not pregnant, taking a pregnancy test is essential to rule out the possibility. 5. **Maintain a Healthy Lifestyle**: Pay attention to diet and rest, and reduce stress, which can help improve the menstrual cycle. #### Precautions If the pain worsens or other symptoms (such as fever or severe abdominal pain) occur, seek medical attention immediately.