Venting....advice please!!!

I'm 7 weeks postpartum and I'm feeling really down. My marriage is on the rocks and I'm trying everything I can to make it better. Problem is, IM THE ONLY ONE TRYING. My husband messed up and ever since we can't get back on track. I feel completely invisible to my husband. It's like he doesn't know I exist because of his job and whatever else. On top of that I feel so unattractive. He never compliments me. Even when I was pregnant. I know my body isn't the same, but damn I only have 10 extra pounds on me. Today he went out to the corner store and while he was gone I slipped on some lingerie. He didn't even acknowledge it or say I looked good. I'm sooo frustrated with him and this marriage.