Please Help interpret these MRIs if possible?

Question

This is the Lumbar MRI:

FINDINGS:
No MR evidence of an acute fracture, subluxation or significant loss of vertebral body height. There is disc desiccation, loss of disc space, degenerative endplate change and endplate osteophyte formation at the L4-L5 level. No abnormal cord signal is seen.
At L3-L4, there is disc bulging which is eccentric and more pronounced laterally and to the left of midline. There is a superimposed left posterolateral high-intensity zone/annular tear. Disc material abuts the ventral thecal sac and extends into the inferior aspect of the left L3-L4 neural foramen. While no evidence of spinal canal stenosis, there is mild foraminal narrowing on the left. No significant foraminal narrowing on the right.
At L4-L5, there is disc bulging which flattens the ventral thecal sac and extends into the inferior aspect of the neural foramina. There are superimposed facet degenerative changes. The constellation of findings result in mild canal, as well as foraminal narrowing.
No other region to suggest significant disc bulging or evidence of disc protrusion is seen. No space-occupying lesion or enhancing abnormality within the spinal canal.

IMPRESSION:
Degenerative change involving the lumbar vertebral column with disc bulging at the L3-L4 and L4-L5 levels.

This is the Thorasic MRI, which both are concerning, however this one a bit more:

INDINGS:
No MR evidence of an acute fracture, subluxation or significant loss of vertebral body height. There is disc desiccation with scattered loss of disc space and associated endplate osteophyte formation. There are a few areas of marrow signal abnormality which have features suggesting hemangiomas and/or regions of focal fatty infiltration. No abnormal cord signal or enhancing abnormality within the spinal canal.
At T3-T4, there is a tiny posterior and central disc protrusion. This finding indents the ventral thecal sac, without significant mass effect upon the cord.
At T4-T5, there is a larger disc protrusion posteriorly and to the left of midline. Disc material indents the ventral thecal sac and flattens the ventral aspect of the cord on the left.
At T5-T6, there is an additional small posterior and midline disc protrusion which flattens the ventral aspect of the thecal sac. No significant mass effect upon or displacement of the cord.
At T7-T8, there is a disc osteophyte complex which flattens the ventral thecal sac. Again, no significant mass effect upon or displacement of the cord.
No other region to suggest significant disc bulging or evidence of disc protrusion is seen

I have MS, but since this MRI, I had a hysterectomy, and then I had an InterStim placed in me, just a month ago, because I had incontinence, a lot, and it could be from my MS, but my urologist tried everything else, and now, my symptoms are actually ten times worse, so he said that everything is well, with the device, he is wondering if maybe it is my back? Well, this prompted me to go back as I did not really read the Spine MRI's at the time because when I had these done, I was more concerned about the Brain at the time, now, after reading these, please someone, if you know what all this means, that would be great, thank you.