The disc herniating and compressing on the right L4 root is causing irritation of that nerve root
. It supplies some part of the sensation in the leg. So it is causing stabbing pain
. The annular fissures are not severe enough to cause such compression but if they increase, it is likely that you may have pain on left side also. For relief from pain, several medications are available which can be taken in consultation with a neurologist
or a neurosurgeon. If the problem persists, surgery may be required in future.