Traumatic brain injuries dont always show
https://knoxcvgb689.birchreport.com/posts/should-you-talk-to-the-insurance-adjuster-after-a-crash
Traumatic brain injuries don't always show up right away. My uncle had headaches for weeks after a crash before anyone connected the dots. If you hit your head at all, get checked. It's not worth waiting to see if the headaches go away