Seems to me the most intelligent thing to do would be to go to your doctor, tell him that your energy levels and sex drive are low, and then ask for complete lab.
If all you are going to ad is 200mg., you might be going backwards. If at this time you are "naturally" making 400 ng. per dl., you would shut down your own testosterone manufacturing system, and your body would adjust to a lesser amount of exogenous.
Bad move.
You might possibly be making much more than 200 ng per dl a week.
In essence, you would need 500 to 750 mg to get that "pep" you are looking for, and then you will stay "on" forever.
Do your research. This sounds like something a teenager would do just b/c it's "steroids" ~ without realizing the science behind it.
Not to mention the unnecessary loss of cash.