I have just started experiencing what I think might be anxiety. I passed out on my 5th day back to work after having my son. I still exclusively breastfeed my 6 month old. I am healthy, in shape, eat well, drink lots of water, take vitamins and am fairly active. To me it feels like an anxiety attack of sorts because it's happened before in a familiar situation. It's always when I am waiting or growing impatient. Waiting on a concert to begin, waiting in line at a store, waiting at work for a hearing screening to complete, and when I was pregnant, even waiting for myself to finish the dishes. It's like I get anxiety about something being over and start to get dizzy, loss of sight, and fear passing out which seems to mandate that I do pass out. But I don't feel what I define anxiety as. I'm not panicking about anything, worried, or nervous. It comes out of nowhere! When I feel coming on I get short of breath, my heart races, I start to sweat, feel lightheaded and then I'm down unless I can escape the situation I'm in and go somewhere and sit down and try to calm myself. When it happens I tell myself over and over "I'm fine, there's no reason I should feel this way. Just breathe." But it doesn't help. I'm more just scared that I may pass out and embarrass myself (which I have). I also have been extremely tired. Now that I passed out just the other day, I walk around thinking about passing out all the time and almost feel as though I make myself lightheaded. I am going to my doctor to get my vitamin levels checked, but I really feel like it has something to do with anxiety. It's really scary! I feel like I can just forget it ever happened to begin with i'll stop bringing it upon myself.