Non-dominant elbow pain?

[Shades]

I am a right handed player with a One Handed backhand and I have been experiencing some aching pains in my left elbow. Now I am asking myself how in the world is my left elbow in pain?, all I use it for is tossing for the serve and tracking the ball as it approaches my forehand. Any ideas why I am experiencing this?

 

[Marius_Hancu]

doing any weights?

I had it sometimes from them, when pushing too much ...

 

[Shades]

Ya, actually I' am lifting weights but only on a light regimine nothing to heavy, I lift about 3 times a week every other day.