I haven't had the best diet while pregnant, craving junk food and salty foods. I read where that…

I haven't had the best diet while pregnant, craving junk food and salty foods. I read where that could cause irreversible damage to the unborn baby. I am freaking out now, I didn't think what I ate affected the baby that much. I take my prenatals religiously. I'm going to start eating better now, but I am so mad at myself. 😡