I have all that and more. It's all quite common and even neuros don't know what to do with it. Yes, ibuprofen will help because even without stenosis, extruded disc material is inflammatory. Surrounding muscles react to the inflammation, people stop moving or start guarding, and pain gets worse: every little movement makes it worse.

Even with severe foraminal stenosis, the nerve still has wiggle room. The canal is not the cord so 3 mm encroachment looks horrifying but it's not.

There are a couple resources for understanding all the bits and bumps on an MRI. One person is Tom Jesson whose focus of research and teaching doctors is sciatica, cauda equina syndrome, and lumbar disc herniation, stenosis etc. The other is California spinal surgeon Brian Su, who has educational YouTube videos.