I hate this feeling!

So I went to my doctor's appointment today, on my way there as soon as I got out of work and into my car I started panicking again, really really bad. I was driving to my doctors office but it was so so bad. I was so afraid that I was going to crash or something. By the time I got to the office I was in tears and really really bad. So my doctor says that it's panic attacks that I am getting. She gave me some pills kinda like xanac. They do help me out a lot. But I am still worried about what I feel when I get these attacks, not sure why I started getting them. For now I am putting the lap band on hold while I figure out what's going on with me.