What Does Pain In Spinal & Pelvic Bone With High TSH Levels Suggest?

hello; my mother is 41 years old and she suffers from pain in the lower part of her spinal bone and in her pelvic bone so she went to gynecologist and she told her to do some medical tests, the result was that she has high TSH (=5.43) and low 25-OH vitamin D-3 (=8.5) so the gynecologist told her to go to endocrinologist. So please can you tell me what is the problem that my mom have? because I am really worried.thanks a lot for hearing me