...what type of meds should i get? he has a fever and he has no engery

Ask your vet!

Just like a person, a dog does not acquire a virus or infection from the rain. It may worsen because it was already there. How do you know he has a fever? How old is he? You left a lot of info out.

There is any number of things it could be, and were he a person, I would say, throw anti-biotics at it and see what happens. But the dog will be unable to tell you if it makes him feel worse or if it's not helping, etc. Tell me he has all his shots?

I'd visit the vet. If you love your dog, he needs medical attention.

Debbie

You know what would work the best would be call your vet and make an appointment and he/she will be able to tell you what to do

how do you know he has a fever?? do you know what the normal temp is in dogs? how long and why was your dog outside in a rain storm...