my bf

so my bf fricking texted me and was like "hypothetically if I cut to deep dyk what heppans" and I answered, and didn't give it much thought since he doesn't likw opening up anyways, but he said he was in the hospital and then he asked me "do yk why I'm in the hospital" I said no and he was like "ok good" that's when I was like really worried because I think he tried killing himself. I don't know what to do, I want him to talk to me more, I'm scared he wont text back one day.