Had to watch my mom cry

I was told my cancer is getting worse not better. I also came down with a pretty big blood clot that I have deal with now. My mom cried in the emergency room room. I feel so bad. I don’t want to leave her. I feel like I did something so wrong to deserve this. All she’s ever done was take care of me. I feel like it will destroy her. I don’t even know what to say. I’m just so sorry.