That's a serious situation that should not be taken lightly. A good chiropractor will be an expert on limitations of certain movements. I would see him or her and get evaluated first. I myself have Spondylolysis and have learned what I can and should not do from chiropractors. Also, a good physical therapist will be another great source to suggest proper movements and possible limitations for your situation.
I would not rely on any info received because just because it worked for someone else does not mean it will work for your herniated disc. Consult with a physical therapist so they can evaluate YOUR situation and design a routine for YOU so the situation does not get worse by doing the wrong exercises. Most states offer direct access so you don't need an MD referral in most cases
Get it fix first and then you can do workouts like leg raise and flexing your head . Avoid weight lifting and bending☺but try to get it fix first