Yes. There are chances that your sciatic nerve is pressed against the tight muscle. For that complete evaluation is necessary by an orthopaedic or a Physiotherapist (preferable).
One can apply hot packs on the tightened area and loosen up the muscle by stretching.
Next Steps
Visit a Physiotherapist nearby, get evaluated properly and take IFT & SWD modalities to relax your pain with complete exercise program to relieve yoy sciatic nerve pain.
Health Tips
avoid prolonged sitting. use proper back support.