Totally understandable. There are certain triggers that can really get to us, knock us over with grief and sadness. It can be the littliest of things. I can name 100 little things that can trigger it for me. You did an absolute fabulous job of keeping it from your W, that was amazing.
You are not a pathetic loser, you are a hurting, brokenhearted husband, trying to keep your family together.