Don't know how you landed or what exactly you fell on re your body however you did the right thing by having yourself checked out.
Muscle spasms that try to right our bodies after taking a fall or even just getting jerked around a bit can really do a number on us in terms of pain or soreness however so can bruises and landing on sensitve body tissue so as Dale mentioned take it easy now that you know things have checked out OK via your post fall visit and reward yourself during your little recovery/rest period.
Your own body will be what tells you how you can progress re PT and so forth altho it's not unusual for the PT to not want you to lose time from your progress tho your body will know how it can progress. You'll see..
I don't blame you either for your anger re what you've been told in the past via docs and your spine tho remember this... you had surgery just recently and it appears you are healing well. Perhaps then was the very best time for you to have that surgery for whatever reason.
We do not know how we would have responded to whatever we may have done at some other point~ we only know how we progress at the present time to whatever we do.
Embrace the good that has come your way because you did this surgery now! I'm happy for you in terms of your success to date and hope the recent fall will not have set you back for long and you'll soon be over any pain it created.
take care and thanks for posting your most recent update