Thank you for your query at DoctorSpring.com
I understand your concern.
Is it localised to the ribs area? Does it radiate anywhere? Does it radiate towards the middle of the abdomen?
It mostly seems like a muscle pull and can be attributed to running for the last 2 months.
I will advise you to avoid running for the next few days till your pain subsides and also use the following medicines. If the pain settles down after taking the medicines then there is no cause to worry.
1) Tab. Ibuprofen 400 mg twice daily for 3 days, after food.
2) Cap. Omeprazole 20 mg once daily before breakfast for 3 days.
The other possibility is costochondritis. Even that will be treated with the medicines i prescribed. In case of costochondritis, the pain will be through out the ribs area and hence i did not mention that as my first diagnosis.