If you are not having excruciating headaches and loss of motor control and other severe symptoms, a bleed is extremely unlikely and a CT Scan would be just a dangerous dose of radiation.

Since it sounds like you are just having post trauma headaches, not increasing intensity headaches, you just need to relax. Your anxiety can make the headaches much worse.

I have had headaches that lasted 6 months. Others have too. Painful but not a big health concern.

My best to you.