<s>[INST] I have pain in my left breast if I lay on it, or if someone give me a tight hug. I do self exams, & have no lumps. I also have chest pain, & I take meds. for irregular heart beat. I see a cardiologist, But this pain is more in my breast when their is pressure on it. [/INST] Hello, As long as your heart problems have been totally under control, then, the pain you are having on your breast is due to muscular skeletal issues. Take Naproxen, but by cautiously monitoring blood pressure and other cardiac symptoms. Apply analgesic cream locally. Magnesium supplement can help but non higher than 300 mg daily. Discuss this further with your caring doctor. Hope I have answered your query. Let me know if I can assist you further. Take care. All the best.  </s>