Since your X-ray is normal, your symptoms are likely due to a minor muscle strain or ligament irritation from your workout. The popping sounds are usually harmless tendon movements or joint pressure changes. For relief, you can use over-the-counter oral pain relievers like Ibuprofen or Acetaminophen. Applying a topical Diclofenac gel or menthol-based ointment can also help soothe the area. If muscle spasms are severe, a doctor can prescribe a muscle relaxant like Cyclobenzaprine. Please rest, apply ice for the first 48 hours (then switch to gentle heat), and avoid heavy lifting. Consult a physician if you experience numbness, tingling, or weakness.