Well I cannot fully determine the depth of your condition, that is something your doctor or psychiatrist would have to determine. Anxiety varies among people and it all depends on what triggers it for you. Now you say you fall out and cry and cannot breathe, the question is "What makes you do that?" Is it driving is rush hour traffic, is it paying at the cashier, or pumping the gas? Maybe walking down the hallway to school, or going through the lunch line? Anxiety is a feeling of uneasiness which makes your body over respond unnaturally and can be caused randomly. You need to think really hard about what it is that is making you feel so distressed. Once you figure out what they are, you can begin proper counseling to help you learn to adjust to it. Usually if your anxiety is causing you to react like that, you might be experiencing a panic attack. Shaking, lightheaded, feeling like you could die, etc. If you are I really advise you to speak to a therapist so they can recognize your severity and recommend the type of medication you need to help control your symptoms. I personally am 18, 91lbs, and have been on Citalopram (celexa) 40MG daily, and am now on Sertraline (Zoloft) 50MG daily. I take them at night because they drain me. It does put you in a mellow state of tiredness, but you realize you're not as "anxious" as you usually are with somethings. On the other hand, somethings that didn't trigger my anxiety now do, it really just depends on the medication. You doctor will try you on various ones to figure out witch is best for you.
So speak to a therapist or psychiatrist (Warning psychiatrist are pricey and you are limited on the time you have to "express yourself" so going to a therapist or counselor first might be your best option. You have more time with them, and they don't cost as much.) Sometimes health clinics around your area offer free counseling. Or your parents jobs can offer counseling for the entire family for free. I just recommend you speak to a psychiatrist or therapist FIRST because your "Physical" doctor that you go to for the flu, sprained joints, or physicals is only taught how to "physically" help you. Not "Mentally". You need their approval because they can only write your prescription for your medication, yet you need the recommended medication from a therapist, or psychiatrist. Do you get it?
I hope you figure out what it is you need, and everything works out for you! Because Anxiety is serious. It can really destroy a person.
I also have Severe Anxiety, Panic attacks, and am medicated.