Hi,
Although it is an impolite thing to do, I would have to ask for your age, because a few of the symptoms you have desceibed sound like peri-menopausal symptoms to me.Menopause is the complete shutting down of the female reproductive system.
If you are in the late forties-early fifties it could be due to the hot flashes.The average age of menopause in the Western world is 51 years, and the normal age range for the occurrence of menopause is somewhere between the age of 45 and 55.
In biomedicine, perimenopause means the menopause transition years, the years both before and after the last period (although the "last period" can be determined only retroactively). During perimenopause, many women find that they undergo symptoms of hormonal fluctuation, such as hot flashes, that cause them to seek medical advice. Mood changes, insomnia, fatigue, memory problems.
Perimenopause is a natural stage of life, not a disease or a disorder, and therefore it does not automatically require any kind of treatment. However when the bodily effects of perimenopause are severe and disruptive, they may be alleviated through medical treatments.
Hormone replacement therapy or HRT, known in Britain as Hormone Therapy or HT, and the SSRIs appear to provide the most reliable pharmaceutical relief.
ref:http://en.wikipedia.org/wiki/Menopause
The extreme fatigue may be the reason for the feeling of breathing difficulty.Alternatively it could be asthma for which you will need to be assessed medically.