Why NOW!!?

Stupid anxiety... this is just getting worse and worse as time goes on. I have tried all my old anxiety tricks and nothing is working. My heart feels like its racing most of the day. It is hard to breath normal. I'm constantly hot or cold. I have no appetite. This is ridiculous. If I knew what it was I would fix it, but I've got nothing. :( I just feel like I'm slowly dying. I should be over the moon about the new relationship and my trip to washington. I should be excited that I'm doing well in classes. I should be happy with no worries. Why now does my anxiety get so horrible??