Stay safe and call 911. Seek medical care immediately. Document the scene with...

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

Stay safe and call 911. Seek medical care immediately. Document the scene with photos and grab witness info. Get a police report, but avoid discussing fault at the scene. Don't give recorded statements to the other insurance company just yet