Feeling like worst mother

My one week old rolled out of my arms while we were laying on the couch. I can't stop crying and feeling like I'm the worst mother. I've only had her a week and this happens. She fell from the couch to the carpeted floor which was about a foot and I picked her up so quickly. I immediately called my doctor and spoke with the nurse and came in to be checked out. The pediatrician said she looked fine and had a less than 1% chance of anything being wrong. She seems to be doing okay. I can't take my eyes off her. I'm so upset. Everything I've looked up and read this has happened to moms and babies of kids who are like 5+ months, not this little. I'm just so heartbroken and angry at myself for letting this happen. My husband isn't upset and keeps trying to console me and tell me it's okay. I just needed somewhere to vent idk what to do from here. I know I'm not going to sleep tonight and just watch her the whole time.