M.W.
Its time to take a deep breath and relax for a minuet. You can trust your daughter's health in the hands of trained physicians. They are the ones to make a diagnosis, google and webMD are great tools, but they don't replace a human analysis. They can very easily freak you out. This happens to both nursing and medical students, they feel like they have all the diseases they're studying about because often symptoms are common things we all experience. They're going to run lots of tests to be sure that she's okay, and to rule out weird things. Often symptoms can indicate tons of different diseases, so they have to rule things out until they discover what it is.
If there was something that needed immediate attention, they'd drop everything and make sure she got the care immediately. So the fact that you have to wait a few days for each appointment means that nothing is that urgent.
Best wishes, I know it can eat at you, but try to stay calm and collected. You'll get some answers soon!