Hope your pain is getting better, I had massive pain yesterday first time in a while
3 hour session Friday another 3 hours Saturday and a flat water paddle 1 hour
Come Sunday half hour into surf the pain was bad very bad.
End of session 2 days compulsory rest and will be back to it
These pains seems to never want to go away but they will take longer and longer to come back
Very very frustrating but unfortunately it's a part of sup surfing
Keep in mind these tendons run from the elbow to the shoulder just in case you think you have a bad shoulder as well
It may not be the case as the tendons branch into two from the bicep to the shoulder.
I can put up with plenty of the pain from the shoulder end but when the bicep plays up it can make a grown man cry