Er....
This is an agricultural hormone that provides both estradiol and progesterone in
large doses.
It is relatively cheap.
It does not require a prescription
Available from vet supply websites.
Product Description
Synovex S - 10 Implants
Steer Implants For Increased Rate of Weight Gain and Improve Feed Efficiency.
For additional improvement in rate of weight gain in steers fed in confinement for slaughter, 
Each dosage consists of 8 pellets containing 200 mg progesterone and 20 mg estradiol benzoate per implantation.
This product was manufactured by a non-sterilizing process.
Synovex S Steer Implants contain two pure steroid hormones, progesterone and estradiol benzoate.
This formulation provides a complementary amount of each hormone for maximal growth stimulation.
Synovex S is recommended for use in steers weighing 400 lbs or more. When properly administered,
Synovex S implants increase rate of weight gain and improve feed efficiency.
Are you fucking barking?

{Serious question}
It's an implant for use on cattle!!!
I've never heard of anyone doing what you suggest
---this strikes me as seriously loopy.
This is a product produced in a non-sterile environment
for the fattening up of large animals [think the size of cows!]
Short term
Prior to being slaughtered in an abattoir.
It is not designed for use on humans.
There is a shit-load of stuff out there on the net on self medding
including the risks
{I started by self-medding}
I suggest you read up on that and follow what others do.
Get your bloods checked prior to starting
{baseline levels}
as there may be underlying medical conditions within you
which you are not aware of
and on their own have no symptoms
but when combined with HRT
can kill you {think DVT}
Baseline Testosterone levels:
Male . . . . 10-25 nmol/L
Female. . . . . . 0.5 - 2 nmol/L
Baseline Estrogen 2 Level (midcycle Genetic woman):
120-400 pmol/L
The following are figures previously posted on NuttycaTS, which are similar to the ones above:
Normal testosterone levels:
Adolescent male. . . . 75-400 ng/dl
Adolescent female . . 20 to 64 ng/dl
Adult male. . . . . . . . .300 to 1000 ng/dl or 10.4-34.7 nmol/L (SI units)
Adult female. . . . . . .20-75 ng/dl or .69-2.6 nmol/L (SI units)
Post op transsexual. .can be lower than 3 ng/dl
Blood tests to check:
Liver function test
cholesterol (triglyceride's)
oestrogen
testosterone
Also, go talk to your GP / doctor.
It's called paying your dues.
The rest of us ts women did that.