My name is Amanda this is my experience.
I was born with Hypothyroidism, it has been with me all my life.
I recently discovered that cow's milk suppresses levothyroxine/synthroid if you are from USA, from working correctly so I changed to lacto free or oat milk.
I am now on 150mg of levothyroxine.
I have, since I was old enough to, learned how to read and comprehend about congenital hypothyroidism.
I have learned how it affects me throughout my life.
In order to help my GP, help me.