I think there is something wrong, I think we know when there’s something wrong with our chilgren, there was a Time when my daughter had what seemed like a cold, brought her to the doctor they said it was just a cold. I brought her back three times then one morning her lips where purple I brought her to her pcp and demanned we go to hospital she had RSV was in the hospital for four weeks, she was very ill, If you think there is something wrong there most likly is insist that the4y run every test they can think of, alot of times they think were worried for no reason but there is something wrong when a child shows signs of a cold for a month, if there is a fever there is something going on,good luck I hope she feels better