Isabella,
good for you for sticking it out, hopefully it will get easier and easier for you. It's terrifying when you are in the middle of an attack, and you have to try to stay "cool". I am always reading that when you are having an attack, to say to yourself, "this is not dangerous", but it's alot easier said than done. Every single time i have an attack, i do think to myself, is this the one thats going to kill me? Has there been something wrong with me all this time, and this is it? It is very scary. I just try to remember, that this has happend before, and i have gotten through it, now i will get through it again. How long have you been taking lexapro? I am on zoloft, im not really sure that it's working. But keep trying let me know how you are doing.