Thyroid issues, autoimmune and healthy baby? Freaking out!!

So I’m 25+4. At each antenatal I’ve been asked if I’ve ever had thyroid issues to which I’ve always answered not that I know of. Yesterday they asked again and ordered more testing for antibodies ect suspecting a thyroid issue and autoimmune disease (which one yet I’m not sure) as my levels still were out of whack. I left feeling ok - a few questions but was happy to wait for bloods for answers. Came home and uh oh! Dr google has scared the LIVING daylights out of me. I hardly slept because of everything that can go wrong and when I did sleep I had nightmares!

Guess I am just looking for someone that has had same experiences and went on to have a healthy baby!? Because I feel with everything I am reading something always goes wrong!