Looking at your blood hepatoma...it does not look like you have the gun seated back into your shoulder pocket enough. The gun stock should be mounted closer to you neck, otherwise, the gun is going to kick your butt.
I buy a Bag of Rags at an auto parts store, and stuff one of them under my shirt; in order to soften the recoil.
The blood thinner could be having a medical side effect, so I'd suggest softening up on the loads.
That rifle hanging on the wall of the working class flat or labourer's cottage is the symbol of democracy. It is our job to see that it stays there."
--- George Orwell