Venting. I feel like my relationship is suffering

I have been struggling emotionally since I gave birth 5 months ago. My birth experience and recovery were extremely traumatic and my husband keeps pushing my feelings aside by saying “it’s not that bad” or “it’s okay” I just feel like he hasn’t been there for me emotionally as much as I am needing him to be. He’s in the military and has been gone for half of our sons life already which is out of our control but I feel like that has just added even more stress to our relationship. We got into an argument over text this morning because he’s currently in another state training. He was supposed to come home on Saturday but they pushed him back so he’s coming home next Wednesday instead, that news put me in a really bad mood. I guess the housing office on base has been calling him saying our allotment/allowance is messed up and he needs to go fix it. I don’t have a car right now (it was stolen right after he left and they haven’t recovered it yet) and he’s asked me to go to the base to fix it for him, he wants me to ask someone for a ride. I asked him to first call the housing office and ask them if it’s okay if I email them instead of having to find a ride there and back because I feel like it would be a huge inconvenience for someone else to come pick me and the baby up, drive us there and wait for us, and then have to drive us back. Not to mention the car seat base was in the car when it was stolen… Idk why me asking him to do this upset him so much but he started saying that we were going to get kicked out of our apartment and be homeless if I don’t go fix this and that he doesn’t care about me being homeless but says that he and our baby need a roof over their heads… I said can you please just call first before I resort to asking someone for a ride, or just explain to them that you will be back next week. After a bunch of back and forth he finally got me an email address. Then he started calling me lazy and said “if you don’t contribute to your home you end up homeless” idk if he was threatening to kick me out or not so I just laughed at him and changed the subject because I am tired of arguing… then he asked me to send him pictures of his plants so I was like “okay” and he was like “now. Send me pictures right now” and kept spamming me saying he wanted pictures now and I told him that he needs to give me a minute and that he’s being annoying and then he said “stfu, I only want to see my son when I get home” like wtf? Idk what to do. I feel like just moving all of my stuff into the baby’s room and set up our air mattress and just sleep in there when he gets home. We had the most amazing relationship before our son was born and I feel like maybe my postpartum depression/anxiety ruined it somewhere along the way because idk why my husband is treating me like this.. I know he is stressed with work so I am trying to remind myself that is why he is acting this way, but I can’t help but feel like it is my fault that I did something to deserve this.