Do I have a serious problem or is it normal?

Well I have had some of your symptoms. Let me tell you if you don't have insurance forget those doctors , they don't know their backside from a hole in the ground. I didn't have insurance went in debt to the tune of $10,000 with MRI's with and without dyes, doppler scans. And nobody could help . It just finally wore off. Deep breathing was the biggest help when one of these attacks hit. Yes you do have a serious problem to answer you question but nobody knows what it is or what to do for it! Ain't that a great prospect?