Hi! After reviewing your history in your words, what I perceive is the problem seems to be a complex one. You have not mentioned about your parity. Anyway, what you require at this stage is
1) To have an immediate consultation with an gynecologist, considering your age & the USG findings which may point to possibility of a malignancy.
2) Have a consultation with an eminent physician to review your blood sugar levels & hypothyroidism
Thanks & take care of yourselves!