Are we falling apart?

My husband and I haven't been talking nearly as much as we should lately and barely ever have sex anymore. It seems like when we do talk its about his work or a fight. I'm struggaling with ppd and trying to figure out how to take care of a baby and a house with 2 men in it (so basically I'm stay at home mom to 3 boys). I'm so stressed out all the time between trying to keep the house together and us together. It seems like all he wants to do is play video games, sleep, or watch porn on his phone. I feel selfish enough when I ask him to do anything since I'm not even working but I dont know if I can keep up like this. I wouldn't mind the porn if we had sex more then 2-3 times a month but I feel like he's using it so he doesn't have to bother with me or something. I just don't know what I should do or if i realy can do anything.