Hi Melioria, welcome
As you mentioned you have been diagnosed with a neuropathy but finding which nerve(s) and where can be tricky. Unfortuanately, neurosurgeons typically look at the lower spine with lower extremity nerve problems and don't know so much about the pelvic area and nerve issues there.
The planned blocks are not targeting any specific nerve so I doubt that they will get you any further diagnostically (not medical maybe someone more knowledgeable could clarify this) but could give you some pain relief as these shots are covering more area.
You have mentioned areas that are served by the pudendal nerve so I think the Dr's are right to pursue that diagnosis but to do that more specifically, it would need to be a more targeted pudendal nerve block.
Quite a few people who have been diagnosed with pudendal neuropathy do have some leg and feet issues too. That could be to do with pain 'wind up', 'central sensitisation' or 'nerve cross talk' (all amounts to the same thing pain wise) which can sometimes happen in the complicated pelvic area especially.
However, it could be because there is more than one nerve compromised, in your case possibly the pudendal (saddle area) and sciatic (leg/foot). I would get them to check your piriformis muscle too, as both of these nerves pass near this muscle which stretches from the sciatic notch to the hip in the mid buttock. You would usually have specific buttock pain where the P muscle is with this condition so it will be fairly easy to rule out.
The other 'complication' is that a compromised pudendal nerve can cause a pain wind up which may involve the piriformis muscle as a secondary problem. So it can be a difficult problem to identify. At this stage that isn't too much of an issue as the medication advice from Calluna could help whichever pathology.
My advice would be to see if there is a PN aware Dr (from the home pages) Hopefully there is someone near you. If not, do not underestimate the role of a PN aware physiotherapist with any pelvic neuropathies. There are quite a few people on this forum who have had the first correct diagnosis from a PT when doctors have struggled. Again there is a list on the home pages here. Hopefully the up and coming 3T scan will give more information.
Physiotherapy may help the problem too as long as you make sure they are PN aware.
You mentioned that your problems seem to have started gradually so there is every chance that conservative treatment (PT and PN block) will help. Let us know how you get on, fingers crossed you will be able to identify the problem soon so that a good treatment plan can be formatted.
Good luck.
Helen
Fall 2008. Misdiagnosed with lumber spine problem. MRN June 2010 indicated pudendal entrapment at Alcocks canal. Diagnosed with complex variant piriformis syndrome with sciatic, pudendal and gluteal entrapment's by Dr Filler 2010.Guided piriformis botox injection 2011 Bristol. 2013, Nerve conduction test positive; new spinal MRI scan negative, so diagnosed for the 4th time with pelvic nerve entrapment, now recognised as Sciatic, pudendal, PFCN and cluneal nerves at piriformis level.