It's only an attack if you can make it settle down on your own. However if you don't yet know how to go about this then depending on the severity of your disorder these can get much more frequent to a point where you can't remember what it's like to live without it.
I have been suffering with an Anxiety disorder since the age of 8, I'm now 38. I wish I could give you more precise advice but I would need to know more about it than just the one attack. Also I want to say that I believe severe dibilitating anxiety is a direct cause of childhood abuse.
And you KNOW what I f-ing hate my mother for creating such a wicked unforgiving disease in her little girl.
I have these feelings too you are def not alone. I have an extensive family history of mental disease and i always feel like i am going crazy, but my dr continually reassures me its my anxiety.
Sounds like an anxiety attack. Put your feet up, relax, or go do some exercise or deep breathing or anything that takes your mind off yourself. It will pass.