I am currently on Bisoprolol and Aspirin for PAF. My cardio recently prescribed Rivaroxaban instead of the Aspirin. Unfortunately, I also take a large daily dose of anti-inflammatory for ankylosing spondylitis which makes me very nervous about taking an anti-coagulant that has no reversal agent if you have a bleed. Cardio recommended I take a stomach protector. Has anyone else been in this position?