Thanks for query
Disc bulge means bulging of intervertebral disc( i.e. gelatin like material in between two vertebra). Bulging may be in any direction,it may be diffuse, central,para central, anterior or posterior.
Bulging of intervertebral disc causes obstruction in the normal openings in the spine through which nerve
roots exits. obstruction in the openings causes compression of the nerve roots and it cuses the symptoms. Normally,nerve roots exists from both sides.
In your case compression is more in the right side where as it is less in the left side as disc bulge is small in left side.
Hope you will understand the terms.