The spoke count does looks a little low for your weight. If you are considering a new set of wheels do not be intimidated by contacting a wheel builder that can build a set of wheels with good components, sturdy spokes and good hubs at a fairly good price.
Some builders to look at (and there are others and maybe so good ones in your area):
Wheelbuilder.com
Prowheelbuilder.com (has a nice custom building tool where you add in your weight and helps you select components and lacing patterns based on their suggestion. It is free to use and just see what they suggest.)
Excelsports
I have a friend in the bike industry that just built me a rear wheel much cheaper than most mass produced sets with the components that I selected. When I picked up the wheel we got into a conversation about spokes and lacing patterns. He told me that he built a wheel for a guy weighing close to 300 lbs that was having terrible luck with breaking spokes so he built up a wheel using DT Swiss Alpine spokes that are typically used on tandems and cruiser bikes. So far the guy has not broken any spokes. However, at your 228 lbs you probably don't need anything that beefy. Probably DT Swiss Competition spokes 32/rear 3X lacing, 28/front would be sufficient.
In the meantime just ride until you do pop some spokes. Who knows that wheelset that you have may hold up okay until you decide to upgrade.