From the description of your symptoms you may have what is referred to as adrenal fatigue. I was diagnosed with this syndrome recently and asked for advice here - but no one seems to be very familiar with it. You definetely need to see an MD so that proper blood work can be done to eliminate the possibility of kidney failure or other more serious conditions. Basically I had to change my training to a 3x week low volume TBT routine (less than 40 mins), avoid all processed carbs and sugars (natural and artificial) and stimulants (including caffeine).I also perform some sort of light cardio for 20 mins on my off days. Some doctors may treat you with corticos or ACTH injections, but it depends on how severely your adrenal function is suppressed. Normally, the hypothalmus producing LHRH which tells the pituitary gland how much LH to produce which then directs the testes to produce X amount of testosterone. However,after mid-life the adrenal glands gradually become the major source of T circulating throughout the body. Therefore, your T levels may be depressed due to the suboptimal functioning of your adrenals. However, whether or not a doctor will treat you with HRT depends on alot of factors (mainly age and whether or not your doctor believes the media hype surrounding HRT) and whether or not he/she believes that the introduction of exogenous T will further suppress your adrenal function. Recovery from this will take a while. Here are a couple of sites that help to explain the symptoms, causes, and treatment for the syndrome:
I hope this helps. Good luck!