I didn't sign up for this. (long)

Okay well it started with me and my bf, we lived in a 1 bedroom apt and it was very good for us financially. Well 6 months later his cousin gets kicked out so we let him stay with us, so we moved to a 3bedroom. 900 rent and we had to pay all bills, WiFi and our new couches cause we really needed them. Well that left us with just enough money. Well 2 weeks or so later his gf gets kicked out and so she stayed with us (she has no job) then a week or so later we find out she's pregnant (she's 16 + not in school) so then a couple months to by and she's just the worst person to live with, her and her bf spend money on dumb stuff knowing we still have bills and stuff. Well eventually she turns him on us and so he had to kick them out, we were not gonna let 2 people live with us for free. Well then my boyfriends friend ends up staying with us for a couple days then turned to the rest of the month staying with us, let all the utillitys go up. Well we couldnt afford living in that house anymore so them we moved to a apartment again with his friend, well when it comes to paying the deposit and 1st months rent he tells us he has no money, so we're stuck paying his part. Then a week or so and goes, and his friend doesn't even come home anymore or rarely comes, he ignores that bills are coming soon. I'm the only one with A actual job. My bf blows his money and I struggle and have to ask my siblings for food or help. Well I get some food and my bfs 2 little brothers come and their friends and then my bfs friends come over everyday or stay the night, and they eat all of our food and leave my house a MESS and their disrespectful to me. Well today I come home and no one is here, I have no keys cause he lost them all. Well I can't get a hold of him and then 1hr passes and he's here with his friends again and then his brothers get here cussing at me cause I'm moody because I just wanna be home alone with my bf for once in like 8 months. (mind you im 16wk prego) well I go straight to my room and my bf usually checks on me but no he doesn't he's playing the game with all of them and their loud .And I haven't been feeling good at all. he finally comes in and asked me to go over their but I say "for what, you don't even acknowledge me, I just wanna be alone"he rolls his eyes and walks out and says okay then go alone tommorow ( I have an ultrasound). like really dude now you know my I keep my distance, I'm usually so lovey but lately I just don't even try cause he doesn't notice what I do for him. Idk anymore, he's about to be 20 and acts like he's 13. it's so frustrating