Struggling with my relationship.

First off, ill make this clear. I LOVE spending time with my son. Being around him takes all my problems away somehow. He is everything to me. This is about his dad. Since my son was born, ive simply felt like im being treated like a 24/7 nanny. I do 99% of the parenting. Probably the whole thing but trying to give a bit of leniency here. I think in the 7 weeks since our son was born, hes done maybe 5 nappies? Fed him twice, and any time he 'looks after' him, hes fast asleep because im having to change him and feed him before i leave him with his dad, in order to go have a nap myself. (Which ive been able to do i think 4-5 times since he was born?). I have to ask to go for a shower because im terrified of leaving LO alone. Thanks to this, ive had 5 showers in 7 weeks. 5. I feel fucking disgusting 24/7. The last 2 weeks have been the absolute worst. I cant speak to my partner without arguing about everything. Arguing about parenting, arguing about money, arguing about time. He constantly tells me he's tired, or unwell, while im the one up every couple hours in the night (and up for an hour and a half sometimes in one go), im the one whos boobs are completely ruined thanks to breastfeeding wrong for weeks and pumps destroying my breasts, meaning any latch from my son now is agony. (Its getting better slowly btw, the pain) But the other night i actually heard the words 'i couldnt give a fuck about your pain'... At 4am, when id just got my son latched and was in so much pain that it throws jolts through me. Yes, id said 'i dont care how tired you are' after hed been up all night playing games... But to hear that? When im feeding our son? And havent slept a solid night in two months including a week in the hospital before our sons birth? After being made to feel like the worst human being in the world for wanting to spend some money on professional photos of our son a couple weeks before, treated like a nanny in my own home. Today id gone for a wee, and while sat on the loo, i could hear my son getting antsy downstairs with his dad cooing from across the room 'what you saying bud' 'its ok'... So i came down and said 'talking from across the room isnt going to help him', to which i got the response 'sitting upstairs doing nothing isnt going to help him'... So now im no longer allowed to piss in peace it seems. Two days after he was born via c-section, (something that has become traumatic to me over time due to a number of reasons) i was expected to be up and taking my son downstairs every day, getting up and down and up and down however many times a day to do everything around the house. I didnt get a choice when the in laws turned up at my house to spend a week here, 4 days post partum. I was, and am, exhausted. A week after my son was born, i was guilted out of the house to go to frickin Currys because my partner was obsessed with the idea of buying a new damn tv. I had to leave the store because i needed to sit down or i was going to fall down, my wound was affecting me so so badly. And i sat in the car while he continued to buy a tv, crying because i was separated from my son. (The in laws were looking after him and i was texting them during to see how he was). Numerous trips to the hospital im made to feel like the villain for, even though two of them were for the jaundice clinic, and the other was A+E because i was panicking. (All for LO. But im the villain because A+E was the middle of the night and he was tired). I frequent find myself wanting to leave. Last time i raised that to him, i ended up apologising because i made him feel like he'd lose his son, his home and me. To be clear here, my partner works part time. Im on disability for multiple health reasons, but im able to be a stay at home mum thanks to this. I understand he may be tired but he's not the only one. His priority list seems to see his computer higher than his son, while my house could burn down and my son would be the only thing on my mind. I feel like the absolute worst person in the world for feeling this way about my relationship when he's given me the one thing i wanted in my life because i cant leave. I cant bring myself to take my son away from having two parents when we both grew up with 2 parents. But if i left, i cant just move nearby, i would have to go back to where i know people, which is hundreds of miles away where i grew up and where my family is. And that would separate my son from having a father around. Im sorry i even needed to post this. I just needed to get it out somehow.