I hate my fiances dog. he pees on everything and shits in my laundry room. he is seriously effing…

I hate my fiances dog. he pees on everything and shits in my laundry room. he is seriously effing stupid. I just took him out and somehow he snuck in my room and pissed on my pregnancy pillow. how the he'll am I supposed to clean that? it was like 60 bucks. we have had him since he was 4 weeks old and he has had medical problems such so was babied since he was small. hes obsessed with peeing on plastic bags and plastic hampers also. I put in a wood floor in the living room because I was sick of cleaning up piss that I couldn't find without smelling the carpet. fml