Well, first off... "normal" doesn't mean much today with some tests IMO.

Please get your B12 actual numbers, because lab ranges in US are very low. At the low end of "normal" people can have considerable neurological damage.

Also "normal" for diabetes is not very accurate either. People who are pre-diabetic have been shown to have PN beginning in studies. So fasting blood sugars should be logged and followed by YOU to show trends. Also get your number result for HbA1C...and follow that yourself.

Please read this:
http://neurotalk.psychcentral.com/post810705-1.html

If your doctor gave you an RX for the D? It is D2 and not active. You should know that it is practically useless...but of course doctors don't know that, as they don't follow the research. You will want to use D3, in a dose 1000IU per every 10 units you need to raise. Your target today should be 50, in US units. So you need 3000IU daily of D3.
D3 is over the counter.

There are supplements that may help you. And topically a product like Biofreeze (I think this one is the best) applied to the feet may stop the burning for a few hours.

Magnesium is one to begin with.
Here is my mag thread:
http://neurotalk.psychcentral.com/thread1138.html

Aim for 1/2 the RDA as in the thread, and choose a supplement that is NOT OXIDE form.

R-lipoic acid (stabilized) can be very useful for people with impaired glucose tolerance, or other causes of PN.
Depending on which antibiotic you used, and for how long, I'd have to know the name and dose for recommendations there.
If you have hidden Candida in the GI tract from antibiotics you would need aggressive probiotic replacements. I think Kefir, is the best natural one, as it has 12 organisms in it:
http://www.lifeway.net/
Typical yogurts have only 3-6 types and the kefir is far more effective therefore.

When Candida is established, its metabolism releases aldehydes into your body which are difficult to clear. Thiamine is the cofactor for this, and taking some may help. Its newer form Benfotiamine is longer acting and more efficient. Starting at least at 300mg a day, for 2-3months should show some improvement if it is going to happen. This supplement is also good for targeting diabetic neuropathies. Most of us use Doctor's Best Benfotiamine. Can be found along with R-lipoic by Doctor's Best also at iherb.com and Amazon.

If you have used Cipro or Levaquin or Avelox in the past during all this progression, there may not be a quick solution to your PN. Fixing the nerve damage that some people get with the fluoroquinolones is tricky and may be unproductive.

You may want to repeat the ANA at a later date, as normals may show up in some testing, where they later become elevated.

Antibiotics kill off bacteria. Our mitochondria in our cells, are decendents of bacteria, and hence some antibiotics damage them. Studies are ongoing now about this, specifically in the Autism community where they are finding that in some people damage can come to mitochondria in this way, causing neurological damage. I have seen even simple antibiotics like Amoxacillin implicated. But this is still in the investigative stage.

You will want to avoid vaccines, also, as they can cause damage.
That is a whole other topic by itself!

So consider modest use of some supplements, and get those B12 results, and see if you can heal up.

Exposure to dry cleaning solvents, toxins, paint strippers, arsenic, pesticides (gardening), or other toxin should be looked for and avoided. If you take Statins for cholesterol, consider discussing stopping those with your doctor, to see if that helps. Statins, prevent remyelination (repair) of nerve insulation.