Poor Baby Girl. :(

My daughter has been running a fever for two days now. It fluctuates anywhere between 99 Degrees, and 102.8 degrees. I'm going to lose my mind. Every time I take her temperature, my stomach knots up as I watch the number keep rising. She has no other symptoms, and that makes it even more frustrating. There's nothing for the doctors to treat. I took her to the emergency room, they give her tylenol and send her home. I can't stand watching either of my kids sick. I just wish it was me. She doesn't act like it bothers her much, until she tries to go to sleep, and then I can tell she is uncomfortable. I just don't know what else to do for her.