Postpartum depression is real

I had my second baby 2 weeks ago. She has colic and cries for about 15 hours a day. Nothing I do helps, gripe water, anticolic bottles, holding her, the only time she doesn’t cry is if she is on her tummy. I also have a 3 year old who has had such a hard time adjusting. And by such a hard time I mean she refuses to go potty in the potty. She has had so many “accidents” lately that she woke up with a diaper rash this morning and is now crying over that. So I have two kids who won’t stop crying no matter what. A few days ago I went to my husband to talk to him about it and was met with “what’s so bad about your life?!” I don’t have a mom. I mean obviously genetically I do but the woman who is my mother is so heavily into pills she sleeps 20 hours a day and is so detached from reality that she doesn’t even know I had another baby. I tried to talk to my grandma this morning because she was my mom figure growing up and I thought she’d understand since she had postpartum depression after my dad and my dad was colicky. Long story short it turned into every time I’d say something she’d bring up a point in how she had it worse. So I eventually just said ok because I had shut down. She screamed “OK?! OK?! NO IT WASNT OK! GOODBYE!” Then hung up on me. I burst into tears because I feel so alone. Everything hurts and everything’s numb at the same time. I just want to feel normal again. I hate that I have no one to turn to. I hate that i have to hide the fact that I’m crying too because no one has the time or wants to hear it. I hate that I feel like a burden. Postpartum depression is so real.