10W+3 & Hypothyroidism

I got the call yesterday it was urgent for me to meet with my endocrinologist. We're trying to stabilize my TSH levels between 1-2. They're currently sitting at 18. And I'm terrified. I don't know what this could potentially mean for baby if they aren't leveled out soon. I don't want to think about a negative outcome but it's always possible. My doctor insisted if we fix it now, baby will be fine & I trust her but how can I not worry? How can I not stress about my baby's future? How can I not be absolutely petrified?
I just needed to vent..my boyfriend doesn't understand 1) my pregnancy hormones or 2) the shit I deal with no longer having a thyroid. Thanks for reading.