Blood Test Results

Hi! I did a blood test a few days ago and not even 12 hrs later Doctor phoned to get booked in for results, I hadn't had an official visit yet. I went yesterday (8 weeks exact for my first pregnancy) and found I had hypothyroidism, she put me on a medication called levothyroxine which I will need to be on entire pregnancy. I have been reading for first trimester and there's a lot of scary stuff on hypo, anyone have experience being on meds and cause I didn't start till 8 weeks will baby be ok?