as complaints you had mentioned seems more likely to be associated with trauma caused 2 yrs back.
physiology to any injured tissue is that any sudden tears is automatically heal with in couple of week.but its not getting better.so in my opinion get screening of MRI
OF THORACOLUMBAR REGION.to establish diagnosis any ailment associated with spine,muscle nerve injury
in perfect way
dr sanjay sharma
interventional spine &joint pain physician