I assume you mean you're to inject 200mg/every two weeks? If that's the case, you're not going to be a happy fellow. Gene has pointed out, to me and others, that testosterone's peak and half-life are such that there isn't going to much of the drug left in your system as the second week comes to an end. You're likely to be feeling pretty rocky if you follow that protocol. A weekly injection of 100mg is pretty standard, and more and more of us are injecting slightly lesser amounts even more frequently (I moved to 60mg every three-and-a-half days in the late winter).
It seems your doctor simply isn't up to date on treating men dealing with low testosterone. Don't be surprised: most of us on this forum had a difficult time finding a physician who understood what was required. What labs did your doctor pull prior to issuing the prescription?