First, move to safety and call the police for a report. Seek medical care...

https://www.expertlawfirm.com/what-to-do-after-a-car-accident-in-texas-a-step-by-step-legal-and-practical-guide/

First, move to safety and call the police for a report. Seek medical care immediately, as some injuries take time to appear. Take photos of the scene and gather witness details