Your symptoms may be due to a flare-up of sciatic nerve irritation, but severe pain mainly around the hip or buttock may also arise from the hip joint, sacroiliac joint, or surrounding muscles. Regular exercise reduces risk but cannot always prevent flare-ups, and the cause cannot be confirmed without examination.
Next Steps
Since the pain is severe and affecting your walking, temporarily stop exercises that increase the symptoms and arrange an in-person assessment with a physiotherapist or orthopaedic doctor. Continue only gentle, comfortable movements and short walks as tolerated; avoid complete bed rest.
Health Tips
Avoid heavy lifting, prolonged sitting, forceful stretching, and self-manipulation. Seek urgent medical care if you develop worsening leg weakness, numbness around the groin, loss of bladder or bowel control, fever, or pain following a fall.