Hi there!
Though your symptoms could be due to low testosterone levels, I would suggest consulting an endocrinologist to rule out other associated abnormalities. Also a semen analysis would be advised to check for quality. If abnormal, testosterone treatment may help improve the quality or semen and thus help with impregnation. I would suggest discussing the situation and the management plan in detail with your treating endocrinologist.
Hope this is helpful.
Take care!