Hello and welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. It seems like a condition called costochondritis, other possibility is muscular pain that develops after physical exertion. As of now, you can take analgesics like Ibuprofen or Diclofenac for pain relief. Also, try anti inflammatory drugs like Serratiopeptidase too. Generally, the pain will settle in a couple of days with this symptomatic management. If pain persists for long, better to consult a physician and get evaluated. Wishing you good health. Thanks.