Should i consider going to my pcp for severe back pain with any movement? i can not bend crouch or sit down because it causes a sharp shooting pain.

Yes: You should consider going to your doctor for evaluation. How soon you need medical attention depends on whether anything precipitated the pain, such as trauma - fall or severe flexion or extension.

Depends: Simple mechanical low back pain usually resolves with rest, stretching, and analgesics, if it lasts more than a week or if associated with leg pain, weakness or numbness then you should see your pcp.