postpartum depression at 5 month

after I had my son I had the crying spells but after getting sleep and getting into a routine I felt better. I still had irritable outbursts especially towards my older daughter. it's like I get these mood swings I feel fine then I feel like I'm worth less and not good for my kids and my husband. I feel like I'm alone caring for them by myself after I work a 10 hour day.. come home get my kids, feed them , bathe them, put them to bed while I deal with screaming and crying and fighting.. then oh my husband finally comes home after I'm done and all I want is to lay my head down.. but no he expects me to have sex with him.. I'm in no mood! it's like conveniently he's home on purpose that late so he doesn't have to help then he wines how he's a ghost i never pay attention to him how this isn't working...hes tired too. I'm literally under so much stress. I just cry and I get angry cuz I feel like I have no support.. especially from my husband. I'm getting ideas now like maybe I can't deal with this anymore. Like I'm thinking of ways to just end it.. and it's hard to admit This! I have 2 kids I love but I'm getting depressed more and more I cant deal with it.