Please help. I have been sick for two years. I'm 22 years old. I have heterogeneous echotexture on my thyroid gland and normal T3, T4 and TSH readings (TSH: 3.77). I had low Vitamin D, which is now resolved by a 2000IU supplement, daily (PSH was normal: 2.7). I have menstrual spotting, a week after the end of each period. I have gained weight rapidly (20 pounds in the past 2 months). I have a lot of intense back pain, mostly in my neck, but also everywhere else.