We moved into a new office a little over a month ago. Not long after starting in the new office, I remember my POTS symptoms changing. I suddenly started having dizziness while seated or not moving, which is totally new for me. Of course, with my history I immediately associated it with POTS and when it continued I made an appointment with my cardiologist. First available appointment was/is for this coming Monday afternoon (and of course, I have to take a half day of work to get there! ) so I booked it and I've been waiting for the appointment. In the mean time, once the weather here changed we started having major problems with the HVAC system. One day, the thermostat near my cubicle got all the way up to 84 degrees (you can imagine how uncomfortable I was!). All of the thermostats in my department were wacky. They fixed whatever was wrong that day, but the issue kept happening. A few days later, we overheard someone saying that something was leaking and the guy working on them had some portable gas tanks. I started thinking about it (I work for an environmental insurance company and I know that leaking gas is not a good thing!) and realized that it was possible that it was the GAS that has been causing me this problem all along. Yesterday, the guy was back with another tank and I got the name of the product and looked it up on the internet. Sure enough, side effects from inhalation are dizziness, headaches and fatigue. Also causes complications with heart conditions. LOVELY! I reported the issue to my boss and the department head, and they are checking to find out if there really was a leak and if it's fixed or not. I can't believe that all this time I thought it was ME though. Now, I don't know if I should be going to the doc because essentially *I* don't have a problem. I don't want him to change my meds if it's something that was in the air causing these symptoms, right? But, on the other hand, should I still discuss this to make sure that I don't have any additional issues with exposure to this chemical for such a prolonged period of time? Clearly it was affecting me.