50mg thrice daily and Tylenol
Hi and thank you so much for this query.
I am so sorry to hear about this pain that you have. From the information you have provided, it is very likely that you have you a strain or some form of tendinitis
(Inflammation of a tendon).
You are doing the right things already. I will simply add that you should try pain medications like Tylenol and diclofenac. These would help to control the pains as well as control for any possible inflammation. Also, you would need to stop practicing vigorously and if need be call off this marathon to get proper healing to avoid aggravating this lesion and causing further damage which may worsen the injury
and make healing a lot more difficult.
I hope this really helps you. I wish you a quick recovery. Please, feel free to ask for any clarification and and more information if need be. Thank you for using our services.