I'm 25 and was diagnosed last week with a TTT by an EP cardiologist after 12 months of testing and several specialists. In a year I've gone from playing sports and exercising everyday to barely being able to make it to school. I'm a graduate student and my program is fortunately very understanding. I moved to North Carolina last August and thought my allergies and mild asthma were just getting worse. As it turns out I don't really have asthma! I've been lurking for a few weeks and done plenty of searches, but I still have a million questions! 1. Does anyone here use supplemental oxygen? I was prescribed 2liter/min with "exercise" when my pulmonologist saw my O2 saturation drop to 82% walking up a few flights of stairs. I understand that reduced blood flow/pooling is probably the cause, but they are very concerned and want to do arterial blood draws during an exercise test. 2. Has anyone had this kind of testing. 3.Has anyone experienced severe heartburn with Florinef? I've have horrible heartburn 2 out of 3 nights that I've been on florinef. My doctors put me on prilosec to try and get rid of my chest pain. I insisted that there is a very clear difference between having heartburn and the chest pain I experience. Nonetheless, I was having heartburn maybe once a month, but it would flare up when I traveled, so I am being compliant and still take 20mg every morning. Thanks!