How long does it take for African Dwarf Frogs to shed their skin? What are some health problems?

My african dwarf frog looks like he is shedding (he has a cloudy white veil all around his body) but he has been like that for the past couple of days. I%26#039;m hoping he isnt sick.|||what the.... buy a dog man hehehe|||don%26#039;t know try going to the vet