I think the average dog's first heat is around 6 months.

I think I read your baby is 3 months. I would get her done now even but if you don't want to, maybe do it around 5 months.

We just had 7 doggies spayed and neutered at my work today. A few hours after their surgery, you would never be able to pick out which ones had just had the surgery. They were on their feet, bouncing around, and I had a hard time trying to keep the boogars calm!

So, in case you're worried, your girl will be just fine!