Your thyroid is showing signs of distress and unexplained weight gain is a common symptoms of thyroid problems. I believe more tests are needed, mainly antibodies and thyroid peroxidase (TPO). T4 is below midrange, Free T4 is low. DHEA is also at the lower end.
I suspect my thyroid and adrenals are suspect.
My blood work just this minute came in. 6/14/2018.
I've been off T for 7 months now and I'm slowly climbing upwards using herbs supplements and diet.
TT is 420 up from 367 last month.
FT is 7.7 up from 6.9.
Estradiol is up from 18.0 to 29.0.
PSA is down from 3.1 to 2.4
I have been using Rhodiola and Ashwangda with boron.
Something has bumped my estradiol which I'll watch closely.
I have come to the conclusion though that nothing beats exogenous Testosterone
but unfortunately my HCT is a problem.