I recently have had some major life changes and problems, I am 38 yrs. old. the other day I was talking on the phone when I felt like I couldn't get enough air in my lungs, I broke out in a cold sweat, and thought I was going to be sick, I became very weak I could not hold my head up, for about an hour and a half this continued, I had just eaten a large meal, and felt like I couldn't breath because of that. when the "attack was over" I layed on the bathroom floor so weak and scared it would start again for about half an hour. I'm terrified it will happen again, and when I think about it I have to take a deep breath in. Any ideas on what this could be?