Pain in the inner side of the elbow after surfing.

Greetings!
These days ecountered some strange issue with my health. I felt a pain in the inner side of my hand, opposite to elbow, I can say an inner side of elbow. This looks like a pain not in muscles and not in bones, probably the cords.
I am a beginner, but I dont have issues with my physical conditions, at home I attend swimming pool 3 times a week and from my point of view I am in a good shape. So I dont think this is because of a sudden physical pressure.
Whatever! Has anyone experienced something like this? Have some suggestions?
These days ecountered some strange issue with my health. I felt a pain in the inner side of my hand, opposite to elbow, I can say an inner side of elbow. This looks like a pain not in muscles and not in bones, probably the cords.
I am a beginner, but I dont have issues with my physical conditions, at home I attend swimming pool 3 times a week and from my point of view I am in a good shape. So I dont think this is because of a sudden physical pressure.
Whatever! Has anyone experienced something like this? Have some suggestions?