poor sick little baby

So apparently--when you have a newborn ( under 2 months of age) and they get a fever, you are suppose to rush them into the emergency room.
Lucille got a fever yesterday when we came home from the store. I pulled her out of her carseat and she was hot. so i called the pediatrician, and he told me that its quite serious when newborns get fevers. i told him that Ezra had just recently got a fever followed by a cold. But he still said that i have to take her in to the ER if her temp was more than 100.4. her temp was not quite that, so i watched it all night, finally at six am , after no sleep all night, an irritable baby, i decided to take her temp again, and it was 101.
so i got up , got dressed and took her in. the hospital staff told me i did the right thing.
but i was not very happy that i rushed her in when it took them four tries to get an IV placed------and then they said she had to have a spinal tap!!! i was not happy about that at all. i know they were just trying to rule out menengitis, but i told them that if at all possible, i did not want that test.
its funny because when you tell the people in the hospital that your daughter previously had leukemia, they are much more sympathetic about not putting you as a parent through any more needless or traumatizing tests.
and its not like i wouldnt have let them do a spinal tap if there were enough legitimate reasons to. but i find it ridiculous to do needless tests.
Lucille was so traumatized by the needles that had four times been unsuccessful. it was really stressful for her and for me.
but her fever went down and the ER reluctantly let us go home. ( we are still waiting for the blood test results.---but over all she is still feisty and eating well---so they are not that worried. )
the moral of the story is, dont let your newborn get a fever.
i feel like its my fault. i have let kids hold her, and my kids have been around her kissing her on her face and such.
im going to be a little more protective from now on.