Any ideas of why you passed out and fell?
Was it an illness of some sort, intoxicated, tripped?
What part of your head hit and was bleeding?
If some sort of illness that could be part of the ongoing issues.

The CT scan warning is probably just something they are required to tell you.
No mention of MRI? Or even X rays?
But certainly the ER would have strongly suggested some imaging if they felt the injury required it.

So brings it back to any possible illness/condition,and/or some PCS symptoms.

Time and taking it a bit easy, limiting sensory overloads ( lights, sounds, visual) ,eating healthy, avoiding junk foods and caffeine, booze etc...is a good start.
check the sticky threads above on the main PCS page.