This is an excellent question and one that is best answered by your primary care doctor
or a spine surgeon
who can evaluate your imaging tests and clinical symptoms and decide what the cause of your symptoms are and what is the best course to help treat you. In general, disc herniations usually cause pain that radiates down into the leg rather than back pain. Since this is the case, patients with disc herniations on MRI usually have the most pain relief if they have common presentations for symptoms from the disc herniation such as pain down the leg in the same distribution as the nerve that is being compressed. If the clinical symptoms do not match with the MRI images, it is less likely that you will have a good outcome from a pain standpoint after surgery
for a disc herniation. Again, since the MRI images are not available in your history, it is impossible to know the exact cause of your symptoms but it is important that you discuss these concerns you have with your primary care doctor or spine surgeon. Also, a left disc bulge is less likely to cause right back pain, and your kidney cyst is also less likely to cause this pain but see a doctor to know the cause for this.