I wasn’t sure how to word my title but this happened a week or so ago and I feel bad for it. 

So, our boss told us that our coworkers mother was diagnosed with cancer, and that it may be terminal but they aren’t sure yet. Coworker told our boss to share with us. 

Cut to a week or so ago, I was on the phone with a well known cancer patient who often over shares the details of their (colon) cancer. Coworker laughed and made a comment about the over sharing and what the patient said this time. So I told coworker the patient was telling me about their poop and how they needed suppositories to go, etc and I was like “what do I even say to that?” And coworker laughed again and says nothing at all. But then I got home and I remembered coworkers mother has cancer and I felt bad for the earlier conversation as it may have been hard for her. 

So Reddit, AITA in this situation?