I yelled at my puppy now shes nervous around me?

you ruined her!!!! just kidding. but seriously, a lot of breeds of dog are very sensitive (moreso than others) and when you yell, it's pretty traumatic. when you yell at them, keep in mind they aren't humans and don't understand what is being said other than the fact that YOU are saying it, to them! scary! just give it some time and never, EVER, yell at her again for anything. it's a puppy. they have accidents.