Is this my fault my husband is in the ICU?

I feel like my husband being in the ICU is my fault and I feel so guilty. My husband is in the ICU after he basically tried to kill himself and I feel so horrible were both in our 20’s and both have amazing jobs and he did try and come to me and tell me how depressed he has been and how he feels like I am pulling away from him and not really thinks that I don’t love him. But I don’t think its true infact I know it’s true! And I do admit I have been kind of ignoring him not trying to but I look back on it and I have because of so much going on through our 2 year old having leukemia and him being diagnosed with testicular cancer. And so it’s just been crazy stressful and just so insane and I don’t know how to deal with our child and him having these kind of problems so I suppose I kind of have been pulling away! Well I got home the other night and he was bleeding out from a gunshot wound and so today was the first time I have talked to him because he had been so sedated and knocked out from his surgery well he basically admitted he tried to kill himself and he is so depressed from the cancer to the home life that he doesn’t know what else to do and he just started crying! What should I do? I mean I feel so guilty! Advice?