Being watched and monitored, at this point your relationship must be pretty bad

I have been spending way too much time talking to my husband's nephew.  I assumed since we're closer in age than he and I are then perhaps we could relate to issues that my spouse and I simply aren't on the same page.  Anyhoo, I have come to realize that I am surrounded by strangers, enemies, foes.  No one I am currently affiliated with has my best interest in mind.  My spouse nephew has now been living with us for almost a month, and I realize he is essentially here to monitor me, and watch what I do.  He even made mention to fact that he is uncomfortable with how much we argue.  Imagine that.  And funny enough the idiot then goes on to say that its the cussing that bothers him the most.  Ok let me explain what he means by cussing.  He over heard me call my spouse a GOAT.  But for some odd reason the fact that my husband threatens to do bodily harm to me doesn't remotely bother him, nor the fact that my husband yells at me consistently and in his presence, tell him that its common for men to do so, and I should just take it and be quiet.  I am simply disgusted by all this.  I'm not really sure what to do at this point.  I have to watch what I say and do, even with my toddler who is less I say off the chain.  His nephew even commented that "you am feeding her chef boyRdee again.  I thought you were going to start cooking for her?"  Ok, um WTF????? how in the hell are you going to dictate to me what I'm supposed to feed my child.  My child doesn't like nor has the palette for our native food which is just too spicy and often times disgusting, I'll be honest I can't eat goat, gizzard, cow tongue, cow foot, cow skin, tripe, fish head, etc.  I start to gag.  The smell alone makes me nauseaus.  If I can't muster the smell, or the look, how can I try to force my child to eat it? Did, I mention his nephew has tried to place dinner orders?  I'm like look here buddy, this ain't burger king you can't get it your way.  Who in the hell does this A-hole think he is.  Its bad enough the SOB lied to me about going on a date with some chick that calls my house on a daily, then when I loaned him my cell phone they forwarded the messages on the phone somewhere but I don't know where.  I am so glad I have my counseling sessions each week cause all this would drive me f--ing crazy.  Did I mention how much of liar my spouse is?  Oh yes, he lies that I took his keys and I hid his stuff etc, and I had to call his job to check to see if he borrowed the keys which of course he didn't , then when he complained that he didn't have the keys to our bedroom, he tried to use the key and realized he was cold busted his key had been there all along.  I hate trying to prove I am right , or that people are lying.  I am so tired of living this way.  Oh let me not mention my a-hole gyn.  OMG, this SOB really ripped into me yesterday, simply because I asked a few questions about the progress of my baby.  Seriously, I'm tired of being everyone's doormat.  I hate being treated like shit, and one of these days I will assert myself, and walkout on everyone.