I started with anxiety attacks in my late thirties. Didn't understand what they were at the time. I had them onboard planes and inside my car. Then, one morning driving to work, I had my first 'panic' attack. Again, still didn't understand what was happening. I tried to drive long enough to get off the freeway, found a gas station to park and 'wait it out'. Didn't work for me. I ended up going by ambulance to the ER. Yes, it was that bad. Felt like a heart attack and I didn't know any better. I went to the doctor who gave me an anti-axiety med along with Ativan for quick relief when needed. In 2008, I boarded an AA 777 on a FC upgrade to LHR. I was seated in 3A and the moment I heard the door close, it started. No time for meds to kick-in (I learned quickly that I needed to take them a couple hours before flying). I rang the FA and told her, "I have to get off this plane." I explained what was happening. I held up a whole 777 for 10 or so minutes. Luckily, my baggage was 'priority' so it was easy to get out of the hold. Long story - sorry. But, my advice is to see a doctor now. Don't wait-n-see. Ten years later I no longer have attacks but do still sometimes feel a little anxious - but it's controllable now. amen.