Your E2 is very low now. So one would not expect that using a SERM to hide the E2 from the hypothalamus would work. But sometimes you throw a brick through the window to see what happens.
In this case, SHBG might be high as a reflex to low T levels.
As the problem seems to be clearly in the hypothalamus and/or pituitary, it makes sense to suspect that the problem might be something that could be detect with a MRI. There could be a pituitary adinoma and we know that it would be non FSH or prolactin secreting. You want to know this as such things can press on the optic nerves if large. A MRI might so some other kind of abnormality.
The pituitary can be damaged by a blow to the head or major whiplash.
Why do I need to beg to get your lab work spoon fed?
Have you posted everything now?
Thyroid and body temperatures:
I pointed out that you were under medicated. You need to be able to increase your dose while watching body temperatures.