<s>[INST] yes, please help me understand .... I have sat in a car seat driving(this HAS happened twice before) and now, I can hardly stand up straight, when I breathe, hurts around my lungs, and under my breasts in the front. have been sleeping and keeping a heat pad on it to get some relief, also took a muscle relaxer, but now still have pain.. this is not a pulled muscle, and what else can I do for some relief and what speciality doctor do I need to try to see????? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. By your history and description, possibility of musculoskeletal pain due to improper and awkward sitting posture is more. But better to get done chest x-ray to rule out internal lung pathology (chances are very less). If chest x-ray is normal then no need to worry about any major disease. Follow these steps for better symptomatic relief. 1. Sit with proper back and chest support. 2. Avoid bad postures in sleep. 3. Avoid movements causing pain. 4. Avoid heavyweight lifting and strenuous exercise. 5. Along with muscle relaxant, you should also take painkiller for quicker and better improvement. 6. Apply ice packs on affected areas. 7. Wear chest belt or rib belt to prevent mobilization of painful areas. You will mostly improve with all these in 1-2 weeks. If not improving then consult orthopedic doctor and physiotherapist. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>