Sir,
You have to do regular stretches for the forearm muscles ... Also u need to do strengthening of the forearm muscles. Wear a tennis elbow strap which would help u for golfers elbow.don't wear it throughout the day.remove it on and off.
Next Steps
icing would help.
avoid repeated arm moments.
regular exercises.
Health Tips
follow physiotherapy sessions for atleadr three times a week till the pain subsides ...