Assuming that you have been exercising regularly and the pain you have has developed only in the last 2 months. Stop straining the muscle and kindly give rest. Keep icing the pain area for 2-3 Minutes for 4times a day.. Continue for a week. Restart your exercises on free weights.. If no pain proceed by gradually loading it 2 kgs at a time over a gap of 2 days.
Next Steps
If pain continues visit an orthopedic for opinion followed by physiotherapy rehabilitation
Health Tips
Kindly check for swelling or extreme temperature difference between affected and unaffected arm.. If swelling and warmth is there then immediately visit an orthopedic doctor.