Low thyroid and anemia connected to vitamin b deficiency?

None of your symptoms are evidence of a B12 deficiency, however there is an association between B12 deficiency and thyroid disease. They are both auto immune conditions and do occur together more frequently in susceptible individuals than in the general population. If you GP has not already checked for pernicious anaemia you can ask him to do a test he should have checked it already as a routine in a patient with thyroid problems.