Mine does sometimes, but I'm also on the computer nearly all day for work, so that doesn't help.
Take frequent breaks, make sure to use proper posture, and adjust your chair and/or table height so that they're ergonomically correct. OTC anti-inflammatories (NSAID's - ibuprofen, naproxen, etc.) can help if you've got any swelling/pain in the elbow (be sure to follow all directions and/or check with the doctor or pharmacist if taking other medication or have a medical condition).
If it still bothers you after a day or 2, you may need to go to the doctor for a stronger NSAID and/or try physical therapy :-(.