I'm a 26 year old female, non smoker. For the last year I've been very active and fit. But just out of nowhere, everything has changed; for the last 6 weeks every time I exercise, I end up getting tight chested and dizzy just after a 20 minute walk. I'm out of breath even when I do a small activity, like shifting a box. So i'm too scared to push myself at the gym anymore. I've also noticed pains in my chest, mild and fleeting though. Only 6 weeks ago, I was able to exercise (and feel great) for an hour at a time. Dr is calling it asthma; I'm not wheezing at all and the medication she's put me on isn't doing much. Had a chest X'ray but all looks fine.
Does anyone know of any conditions with these symptoms, that aren't picked up by x-ray? Or is it that you just lose your fitness so quickly, after 6 weeks of non aerobic exercise you huff and puff at any exercise?
Any input would be great!!