I am the worst parent in the world!!

Vanessa • Wife to a great husband, mother to a gorgeous 12 year preteen, a handsome 21 month old boy, and expecting a baby girl, Avi Jai, on 9/22/18.
Someone please help me!! I am beating myself up over this! I was feeding my 1 month old son and while checking to see how much he ate I dropped the plastic Avent bottle on his forehead. He let out a little cry and as I picked him up to comfort him, he was fighting me to feed him again and he head butted my face, and then began crying all over. I called the dr and they said that he should be fine. I bathed him and he was calm and now he's down for a nap, but I can't help but feel so bad!! I feel like I
I'm doin such a bad job! I was 18 when I had my daughter and I had so much help, practically to the point where I didn't do too much, my mom helped so much. I'm alone with this one and I feel lost. Like I'm doing everything wrong. I k own the dr said he should be fine, but what do you experienced parents think? I'm an educated individuals but I still don't know everything and I feel like a brand new parent. P