I agree with your chiropractor's assessment, provided that you are seeing some sort of progress over time. While I don't expect that you'd be able to feel improvement after each and every visit, an over-all evaluation (e.g., once a month or after every 5-10 visits) should demonstrate progress. If you hit a plateau, it's time to start cutting back on visits until you see your symptoms worsen. In other words, you want to get adjusted the minimal amount that it takes to still get the results you seek. Of course, you may find other benefits that accrue from more frequent treatment, but that's a different story.
Regarding the electrical sensations, has your serum vitamin B12, B6, and folic acid levels been tested? Vitamin B12 deficiency in particular can cause these type of symptoms. While deficiency usually causes a macrocytic anemia, you can't rely on a CBC (complete blood count) alone for diagnosis because the neurological symptoms can develop before the classic changes in the blood manifest. Also, taking folic acid supplements can mask B12 deficiency.
Finally, arthritis or necrosis of the acetabular joint should be ruled out. (X-rays usually) This often refers pain to the groin area rather than the pelvic floor in general, but I am not clear as to exactly where it hurts at this point, so I thought I'd throw that in as well. There is no reason to automatically assume that all your pain is from a single source.
These are other directions you might want to explore. --Dr. B