I'm sorry to hear about the persistent pain you're experiencing. Pain that extends from the shoulder to the leg on one side and fluctuates with your menstrual cycle, increasing before periods and decreasing afterward, can be complex, especially when imaging and specialist assessments show no abnormalities.

This pattern suggests a possible hormonal or gynecological influence, even if scans are normal. Conditions like endometriosis or pelvic congestion syndrome can cause cyclical pain related to menstruation but may not always be visible on standard imaging. Additionally, nerve irritation or muscle pain influenced by hormonal changes could contribute to your symptoms.

Since you mentioned no abnormalities on MRI, orthopaedic, neurological, and uterine scans, it might be helpful to consider:

• Hormonal influences: Fluctuations in hormones before periods can sensitize nerves or muscles, causing pain.
• Functional pain syndromes: Such as myofascial pain or referred pain from pelvic structures.
• Consultation with a gynecologist specializing in menstrual disorders or a pain specialist may provide further insights.

If you are using or considering hormone-related treatments, such as progesterone therapy, discussing these symptoms with your gynecologist is important, as some medications can influence pain perception.

Recommendation: Please consult a gynecologist or a pain management specialist for a thorough evaluation and tailored management plan. They may consider advanced diagnostic approaches or therapeutic trials to help alleviate your symptoms. If the pain worsens or new symptoms develop, seek medical attention promptly.To narrow down potential causes, we will need some more information.Please tell me your age and gender.