Fucking hell mate.. I don't know what to wish and say, but this is the life. I just hope you will move on, beat this challenge and ya..that's about it. I do remember as well when my dad died, I was 17, getting close to 30 I started as well having some health issues, but nothing as close to yours. Now being over 30, no more drinking, no more nights not slept just because of focusing only on work.
I don't believe in God at all, but, sometimes, either you consider fate to god, it's all about God's wish.

Good luck and all the best!