hi therealme, you said when your dad had fallen out of bed, you felt it was best to call the ambulance instead of picking him up. your dad could have broken a bone or his back during the fall and your instinct told you not to try to move him yourself. you did what you felt was right at the time. so please don't feel bad about this.
i too felt guilty after my mom passed, things i should have done or not done but i eventually realized she would not want me to be unhappy, and i was able to let the guilt go. do it for your dad. many hugs.