No, but you chose to

While you didn't need to get the shot at 8 inches you decided to. At 6'4 you have a strong build, but you're still quite lean. Because of this, you decide it would be good to breed and be breed. Getting the injection seems like a good solution for you. The doctors asked multiple times if this was your choice, which leads to you explained your reasoning. Your words convince them of your conviction. The human race needs as many new children as possible and, if you could both sire and carry a child, it would increase the chances of new life being brought into your race.

The doctor informs you that you have 24 months to both sire and get impregnated, which means you have double to work ahead of you. It doesn't bother you though, you like a good challenge.