 [ Symptoms ] i have hypothyroidism how should i approach pregnancy [ Disease ] hi hypothyroidism is very dangerous on your baby so your doctor should make sure to follow the guidlines which are first trimester tsh 0 1 – 2 5 miul second trimester tsh 0 2 – 3 0 miul third trimester tsh 0 3 – 3 0 miul he should make sure to control tsh if your gynecologist does not know the guidelines then tell him or switch him good luck