Talking to my spouse

Ma

So long story short I had a rough night with my 6 week old last night. My husband was trying to be helpful but nothing we did seemed to soothe him. My husband made a comment about me drinking wine while breastfeeding since he was acting like he was hungry but wouldn't drink the bottle. After almost 2 hrs of him crying I had a thought that if I just drowned for a min or two I could get away from him crying. It left as quick as it came, but made me feel like even worse of a mother. I was just sitting there silently crying and my husband asked why I was crying. I was unable to tell him.

How do you tell someone you had a suicidal thought without them thinking you are unable to care for your child?