Things are getting worse

I had my first panic attack about a month ago and the attacks happened every few days for a while, but now I am getting them several times a day. I went to see my doctor and she put me on Celexa (I tried paxil but the side effects were horrible) and xanax (as needed). I'm to the point where I really don't think I can function normally. I just finished school and I am starting my summer job next week, but I really don't think I can stay there. I am terrified I am going to have a panic attack while working, or that something bad will happen to me. I am going to be working outside with plants and one of my greatest fears is getting stung by a bee and having a severe allergic reaction for some reason, and I am petrified that this will eventually come to pass. When I have a panic attacks I get dizzy, nauseous, flushed, my heart starts to pound, my chest hurts, I feel like I can't breathe and there is something in my throat, I start sweating, and I just get this overwhelming feeling that I am about to die and nothing can help me. They last about twenty minutes to sometimes over an hour.
Right now I just don't know what to do. I am starting college in the fall and I'm going to a school known for very rigorous academics. I am worried that with the panic attacks I won't be able to do as well as I should and I'm afraid it will impact my social life. I plan to take advantage of the school's mental health resources, but until I get there in August I don't know what to do.
I'm not sure why I started having panic attacks. I had a lot of family stress early in the year but when the attacks started things were much better and I was more relaxed and at ease than I have been at any other point this year. I haven't gone through anything really traumatic either.
Basically I am wondering what I should do right now so I can actually go to work and not have an attack. And I'm also wondering if this is a problem I am going to have for the rest of my life. I've already started avoiding certain things/situations because of it and I'm afraid that if it goes on for much longer I'm going to be incapable of doing anything. Please help!

Wow! You described to a tee what I go through when I have m panic attacks. It is an absolutely awful feeling I know. But you will not die and you need to keep telling yourself that. I do not take any medication for mine and back in 2007 I had them everyday all through the days. Now I don't have them as much. When under more stress I notice that may bring them on. I know that after reading so much on panic and anxiety that it is almost 99% treatable. And you may not feel that way because this is all new to you but you will get better. I am sure of that!! It will be a good thing to read up on maintaining a good positive attitude or to develop a better one because it will help you tremendously. When I have my panic attacks I sometimes wished I had a xanax or klonopin to take to take the edge away but I just wait it out and it does suck. I don't know anything worse than a panic attack. I can tell you not to avoid things you like to do because if you stay busy doing things you love and enjoy it will keep you busy and help. You are just very overwhelmed to all of this right now and after a little while you will feel much better about everything. The human body adjust to everything and it wll get easier. I realy hope you are feeling much better today and that you have a great weekend. Things are going to get so much better.