I understand that the bleeding is a serious concern, but does that have an immediate, potentially fatal or life changing impact - or does it happen with enough

I understand that the bleeding is a serious concern, but does that have an immediate, potentially fatal or life changing impact - or does it happen with enough warning that you could stop taking aspirin and/or get medical assistance? Anecdote time! My dad was on a bit too many blood thinners—a prescription, and aspirin. He’d been feeling weak and a little down for a week. On a Friday night…bam, passed out, in the bathroom, and hit his head. Went to the ER. When…I’ll elide details…using the restroom, he had a huge GI bleed. They had to put 2 units of blood into him in the ICU. So, yeah, bleeds can be bad. As bad as a heart attack? No, but they really can sneak up on you.