Hello,
Thank you for your query at DoctorSpring.com
I have read your question with diligence.
1.In undisplaced transverse process fracture of lumber 3 vertebrae there are almost nil chances that you may have chronic pain.
2.Drinking is always have deleterious effect on tissue recovery.If you are chronic user of alcohol in large amount then this can damage your tissue.Nerve tissues are more prone for damages from alcohol.
3.As you had mild TBI so there are less chances of having more damages due to alcohol.In mild TBI there is generally mild edema is present which gradually resolves in few days to few weeks.
Hope this all will help you.
Feel free to discuss further,
With best wishes.

Dear,
Most probably you have misread my comments.I have written that there are almost NIL chances that you may have chronic pain issue because such type of undisplaced injuries do not lead to chronic pain.
If the memory loss is gradually happening then you need to consult a physician.
With best wishes.

Hello,
Thank you for the follow up.
It is probably due to the impact of the accident. Though not chronic this kind of pain needs a considerable amount of time to recover. The intensity has reduced right?
Regards.

If the pain is persistent, then you can visit a chiropracter.
A couple of physiotherapy session with back strengthening exercises will be helpful.
Please update me after that.
Regards.