I would seek the advice of a local, knowledgeable shotgunner to help you with gun fit, and possibly how you mount the gun. My first suspicion is that you are primarily a rifle shooter, may have some difficulty in how you are mounting the shotgun, and that you likely need some adjustment to reduce the amount of drop at comb & heel, and very likely a fair bit of cast-off.
All conjecture on my part, (but seems likely given you are getting bumped in the zygomatic arch , i.e., under your cheekbone I suspect) Good shotgun fit is paramount - and when it fits correctly, recoil is barely noticeable. I have no problems whatsoever shooting 3 or 4 hundred targets a day. A good shotgunner can help you get to where you need to be to help that gun fit better.
( P.S. none of my rifles fit particularly well, they're all too low, too short & none are cast-off - but I don't shoot a hundred roounds a day with them !)