Welcome to HCM
Thanks for posting your query in HCM.I understand your concern.
Menstrual disturbances are very common in Thyroid disorders.As you are having hypothyroidism
, you need to check your TSH
levels once more along with Free T4 levels.
As your half of the thyroid is removed,your body may be deficient in thyroid hormones leading to your menstrual irregularities.Hypothyroidism is known to cause periods to come more frequently that is called polymenorrhea.
So i would advice you to confirm your Thyroid profile once more.
Hope you are happy with the answer.