You were slightly worried about the fact that there were earth ponies that would undoubtedly be in estrus, as well. They'd have a phenomenal amount of endurance, and that coupled with their guard training made you wince to think about satisfying them. They were still out on guard duty at the moment, which was a temporary blessing to you. Still though, pleasuring a group of some of the most accomplished fighters, fliers and casters of Equestria was something that made your mind go kaput.