First of all, you do not sound like a hypochondriac at all.
You have a lot of issues going on right now and some of them sound like they could be serious and need medical attention right away.
You sound like you have classic symptoms of nerve compression and spinal stenosis, caused by a bulging disc.
Don't let any doctor tell you that a disc bulge is too small to cause any pain. That is nothing more than a crock of you know what.
Everyone is an individual, and our pain tolerances are all different. what would cause no pain to one person, can cause a bit of discomfort to another, and horrible pain to someone else.
A good spine surgeon will look at the MRI pics and attempt to match the patient's symptoms to the MRI pics. If that can't be done, then further testing needs to be done.
I'm concerned about a lot of your symptoms that you have described.
The sudden onset of spine pain, loss of balance, etc are signs of a severely worsening nerve compression that could be starting to become a permanent nerve damage.
The numbness and tingling in your legs and feet are coming from nerve compression in the L/4/L5 possibly into the S1 as well.
I would venture to guess that the bulge has worsened and it is quite possible you have more than one bulge.
The fact that the original bulge is in the L4/L5 area says that some of your bowel/bladder problems can be coming from that area.
The nerves at the L4/L5 go to the bowel and bladder.
There can also be pressure on the bowel and bladder and that point, that could prevent you from emptying your bladder fully and that would increase the risk of urinary tract infections and the pressure on the bowel can cause constipation as well.
Now those eye problems going on are not a good sign. You need to get to an opthomologist ASAP. that could be an indication of a retinal tear and if left intreated you could lose the vision in your eye.
The pressure of straining from constipation can cause that kind of retinal tear.
So please get the that eye doc ASAP.
You also need to see a spine specialist ASAP as well. Do not go to the same one you have seen in the past.
Seek out a new specialist, either an orthopedic surgeon that specializes in spines, or a neurosurgeon that specializes in spines only.
Some of those symptoms could be the beginning of cauda equina syndrome, but you need to get that checked out ASAP as well. You need new MRIs to help with a diagnosis.
Please get to the eye doc and a spine specialist ASAP and don't think you are going crazy. you have a lot of issues going on and at your age, you shouldn't be suffering from them.
If you have any other questions just post here or PM me and let us know how you are doing and what you find out.
Fran