Hi Welcome to healthcaremagic I have gone through your query and understand your concern.It is likely to be muscular pain. You can take analgesic such as ibuprofen for pain relief. No need of panic but you can get your heart function test to rule out heart disease. You can discuss with your doctor about it. Hope your query get answered. If you have any clarification then don t hesitate to write to us. I will be happy to help you. Wishing you a good health. Take care.