Need advice please anyone

My wife and I haven't been living together for the past year and a half. We've been trying to make things work, but recently she told me she doesn't want to anymore, and she said it over text. Right now, I'm at the emergency room after a bad fall—I think one of my ribs might be fractured. I texted her about it, and all she replied with was "ok." It hurts because I don’t have anyone else—no friends, no support. I feel completely alone. Lately, I’ve been sleeping in my car. I told her she was being cold, and her only response was, “I know I am.” I’m struggling to believe it. I cry constantly and have nightmares every night. This just feels unbearable.