Detailed history and investigation is needed. .But as I can understand its mild disc bulge at L3-L4 nd L4-5..Which is not the cause of your discomfort. .It's myofascial triggers which is referring pain towards your toes and giving u night cramps ...

If you have back pain associated with pains going down the leg you will probably have a disc bulge or prolapse putting pressure on the nerve. You need to see a Spinal Surgeon for assessment and investigations as appropriate. Once you are assessed you may need an MRI scan even if you have had one in the past as your symptoms have changed. You may need directed physiotherapy, painkillers, yoga, posture improvement and hot fomentation. Please see a Spinal Surgeon. Hope this helps. Dr Vinu Raj Consultant Spine Surgeon MBBS MRCS FRCS(Trauma&Orth)

In my opinion u need to go for thorough check up like few blood test like calciumvitamin d vitamin b 12 uric acidthyroidhba1c with blood sugar...these pains can be becoz of the deficiencies of these components in body...after this visit a Orthopedics followed by few sessions of physiotherapy then u will feel the difference as need it very badly... get well soon take care

Detailed history and thorough examination is needed. Other details such as work environment, level of activity etc is also required.