I'm glad you called him. Generally when they are drinking is when they feel the lowest and that's when the calls come in about death, etc. You had every right to be worried when he called you. You just never know when it's a true threat or not.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
