Originally Posted by MoAlpha

Its impossible to say what’s causing your pain from the description so one can’t make any specific suggestions. However, discs protrude and herniate in a generally posterior direction, so spine flexion is to be avoided. That could mean going to an upright bike or, if you want to ride in an aggressive posture, learning to hinge at the hips and maintaining a flat back. That’s good back hygiene and might help with the pain. If you are having pain referable to one or two nerve roots, transforaminal epidural steroid injections can be very helpful in getting over the painful phase of the disease.
Good luck!