😩 SOS

So my husband and I have been together for 7 years.. we are 22, with a toddler and have been married now for a year and a half. I can't get him to touch me 😩 he never acts interested in sex and I'm starting to have a lot of resentment towards him. Seems like he only flirts with me or finds me actractive when he's drunk and it's really beginning to hurt our marriage.. someone help me!! What do I do to save my marriage?