Hi, everyone! I've been a member for a while but this is my first time posting. I am 40 years old and was diagnosed with POTS about 2 years ago after a long battle with doctors diagnosing me with panic/anxiety. My main symptoms prior to diagnosis was tachycardia, dizziness and intermittent chest pain. However, my symptoms have changed a little lately. I have been getting this feeling as though I can't get a deep enough breath - actually, it's really hard to describe and that's the best description I can give . I'm not panting or gasping for air, it's just a weird sensation. I also have some nausea and dizziness with it. All symptoms that I know can come with Dysautonomia or specifically, POTS. I had a heart catherization five months ago due to other symptoms (left arm discomfort and numbness) to rule out any coronary heart disease and my arteries were reported as being clear. Well, due to the fact that I am having the nausea now, I went to Urgent Care to be checked out yesterday and they did the normal EKG, Cardiac Enzyme markers and CBC and gave me fluids. The EKG of course showed a normal sinus rhythm, all my vitals were normal and blood work was normal. I have brought this breathing issue up to my Cardiologist who manages my POTS and he says it could be MCAD but didn't want to add new meds at that time since it is something that comes and goes. However, now it seems like it is always there. When I lay down, I feel fine but sitting up or standing, the symptoms kick in. I always get afraid that it's a heart attack on the horizon because these are they signs they tell you to look out for, specifically as a woman. Can anyone else relate?