Thank you, the reason I asked about an emotional shock as all this started after a breakup. I've been through worse than this in my life, but never felt like this. I seem to have no enjoyment in life now. I've said the my GP it's an hormonal imbalance causing this and all they did was refer me to a shrink. I've had counselling, but that didn't work, which it wouldn't if it's low t. I'm going to pay for the blood tests you suggested. My job is suffering as well, as it's a very physical job and I don't have as much energy as I had before.
