Blondie, I'm assuming that 89 was the year you were born because you said you are young. I was around your age when my anxiety began to get really bad, I think my hormones played a big role in it getting worse. My heart would race all the time to and it still does when my panic is really bad. I'm 34 now and have a son who was born in 1989 and I'm still alive and kicking, so try not to worry if a racing heart was serious it would have effected me by now. make sure you keep your appointment tomorrow , you will feel so much better after you talk to someone.