Ppd rlly bad

I need help nd support moms . I’m a young 18yr old SAHM nd dont have time for myself to get help . I have a 7 day newborn and one year old. My depression feels so bad that I just cry all day and want to just disappear. My BD is very unsupportive to my emotions .. it’s really hard because he cheated on me 3 times right before we had the baby . I have no family or friends . All the bridges got burned because they hate him .. I wish I could reach out to someone but nobody will reply or they will go off. I’m so alone ... I want to see a therapist but I can’t. My bd sleeps in all day ..