Stay safe, call 911 for a police report, and get a medical check right away....

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

Stay safe, call 911 for a police report, and get a medical check right away. Snap photos and gather witness info, but don’t discuss fault. Avoid giving recorded insurance statements and keep track of your filing deadlines. Texas law moves quickly.