Im so scared of having my baby alone with me now since my boyfriend went back to work and we left…

Im so scared of having my baby alone with me now since my boyfriend went back to work and we left the hospital I feel like what if I do something wrong what If I change her diaper wrong, what If I miss one of her feedings, what If I cant calm her down while she's crying I just want to be a good mother and I'm all worried.