Don, you're administering exogenous testosterone, which will cause the HPTA to suppress GnRH - LH & FSH. If your diagnosis was secondary, your LH was already at a low level. Once you start TRT, it goes in the tank for good!
Nelson noted the TSH. You "need" a complete thyroid panel, including Free T4, Free T3, Reverse T3 & Antibodies (TPO & TgAb if you have not had them done). Seems the majority of docs and patients are really overlooking the thyroid side of it, which in many cases can be directly linked to hypogonadism. Check it out and let us know ...