I did the same exact thing. I thought about it while filing, but I thought that if I needed any information about it, I would've had TurboTax pop up a prompt (if it did, I didn't see it). Then, I put it in the back of my mind as I was answering other questions. Long story short, I filed on Friday then received the 1095a forms on Saturday.
It sounds like you won't receive a significant cut to your refund (if you even receive one at all) since most of the year shows $0 except for January. However, because it's not included in the initial filing, your refund might be slightly delayed by a few weeks (than when you were initially hoping to receive it). How do I know? Unfortunately, this isn't the first time I forgot to include the 1095a form information on my tax return (the first time was when the insurance credit was first instituted).
