You definitely shouldn't wait because an exposed nerve can trigger agonizing pain or develop an infection very quickly. When I had a severe medical dental emergency on a weekend, Millennium Dental Center took me in immediately and stabilized the tooth. The dentist smoothed down the sharp edges and placed a durable temporary crown to protect the root. My advice is to avoid chewing on that side entirely and rinse gently with warm water until you get to the chair. Their urgent care team was incredibly efficient, calm, and saved me from a miserable weekend of throbbing pain.