Baby fell off bed

Earlier yesterday my 8.5 month old fell about 3 feet from bed to hardwood floor. I immediately took her to the ER because i was so afraid, the doctors said she was totally fine, vitals were good no bumps on head or anything. I have been sobbing trying to calm myself down. The guilt i feel for letting this happen is unbearable. I was right next to her when jt happened it just happened so fast. Has anyone had this happen?? Or am i the worlds worst mom 🥺