Help post whelping behavior?

My dog that we found stray and pregnant has delivered her pups! Thanks for the help before with her signs of labor. Now I am concerned about the way she is acting post puppies. I called the after hours vet who I have worked with since we got her, because I am concerned about the way she is acting and was doing some research and found milk fever sounding like symptoms shes having. I'll try and explain what is going on. She is acting nervous, every time I leave the room she leaves her whelping box and follows me. She finds where I went and then she paces around the house, sometimes whining. She is not having any discharge like I have read about from her vulva, there is nothing coming out. Also she is panting a lot, I am trying to keep the room as cool as I can without keeping it too cold for the puppies. It seems like the puppies are nursing A LOT sometimes for a couple hours at at time. She is very gy, burping farting a lot. She is eating food that is mixed with chicken broth, but will not eat just dry food. She is drinking water, and going to the bathroom as normal. I am hoping that the puppies are getting enough milk. If you gently squeeze her teats milk doesn't come out easily. I took her temp earlier, 101.5. and the puppies were born last one at 4 PM yesterday. Like I said I called the vet he didn't seem concerned, said he was pretty sure she didn't have milk fever,and said it didn't need to be dealt with emergantly. He said becausee she is 2 yrs old, I am feeding her Iams puppy food, a good quality food and that she just delivered yesterday that she doesn't sound like she has milk fever. But I am worried out of my mind. I have never had a dog had puppies before but something in my gut says somethings wrong. Please help, is this normal am I just being a worry wort?