My boyfriend harmed himself while I was trying to help him

TW sh I feel like I accidentally caused my bf to harm himself by talking though how he was feeling. It’s hard to get him to open up in general, so I was trying to put the pieces together, using his own words. When I did, he hit himself right in front of me before I could reach out for his hand. I know really it’s not my fault, and I feel really conflicted about how I’m not particularly feeling broken up about it. I can’t tell if I’m dissociating from it or if I’m not letting it affect me as much as I would have in the past. I don’t know what to do or how to address him. A lot of the negativity is stemming from being in grad school, but I don’t think he thinks he needs or deserves to go see the campus therapists.