Kaylee is having her first heat now at 17 months. At first it wasn't so bad. There was a bit of discharge but not that much. She's more swollen now, there's more discharge and she smells. She smells really strongly. I'm sure part of it is discharge in the feathers on her back legs, but I've never had a dog go through heat before. Is this a normal thing or should I be hitting up the vet to double check?