I think you should do a pregnancy
test to make sure you are not pregnant. Pregnancy would explain most of these symptoms.
When you lose weight all of a sudden due to a crash diet
, or a rigorous exercise program, you can get what looks like stretch marks
, on your tummy and even arms and legs. I would not worry about that.
If you are not pregnant, you may be having hormonal
disturbances, which may explain your symptoms. In that case, see your doctor, who should be able to give you some medication to bring on your periods, if you are not pregnant.