I have been having lower back pain with shooting pain in both legs. Also have been having bouts with diarrhea several times weekly with pain in the lower part of belly right above the pelvic bone. I am wondering if these two things might be related.
Hi I am Chat Doctor. .  In my opinion you have a kind of sciatica due to nerve compression, actually these two symptoms are not related, but bowel movements may exaggerate the pain sensation.  For my patients I may recommend physiotherapy, hot massages, spinal straightening exercises will be helpful, painkillers like Advil tabs when needed, gentle massaging with anti-inflammatory gels, B12 vitamin supplements, muscle relaxants will be effective for most of the cases, in more severe and chronic cases steroid tabs or injections are prescribed.  If pain persists I recommend MRI scan on your spine to exclude any spinal disc herniation and follow them up with your neurologist for proper evaluation and management. Please click and consider a 5-star rating with some positive feedback if the information was helpful. Wish you good health, Any further clarifications feel free to ask.