Type 1 diabetes and pregnancy. who do i see first--endo or high risk doctor?

High risk then endo: I recommend you see both, first a high risk OB then an endocrinologist.

Both.: Both an experienced endocrinologist and a maternal-fetal medicine specialist are essential to achieve good outcomes out of these extremely high-risk pregnancies. Blood sugar lability has the potential for maternal/fetal lethality and must be taken extremely seriously throughout pregnancy! try and control you blood sugar for at least three months before conception to minimize risks to the fetus.

First available: It doesn't matter who you see first. You need both of them asap. I assume you already have an endocrinologist.