need to vent ...sorry my story is long

when the father of my son and I lived togther with his family we were all happy finding out I was pregnant but just 3 weeks after finding out I came to find out the father of my son had cheated on me with his ex (who is underage ) and got her pregnant too and she threatened to jail him if he didn't give her money at the moment or leave me . I decided to move out and leave cause it was a lot for me to handle in so little time . His family told me they would be there for me no mater what happned . I later found out they brought the other girl to live there with them because they "felt bad for her" , it hurt me so much when I invited them all to my babyshower and no one showed up except the father of my child and I wouldn't of had a babyshower if I didn't through myself a babyshower and payed for it all out of my pocket and to find out his family is hosting a babyshower for her really hurt me . I keep in close contact with baby daddy and he tells me he regrets everything and Dosnt want to be with her but he is forced to be with her but wants to be with me. I'm due in 3 weeks and till this day I still haven't herd anything from his family and I don't wish for them to come visit at the hospital but I know if I don't let them in he well say it's there right to visit and also if I don't give the baby his last name it'll caus problems with everyone and I don't know what to do . I just want to not worry and have my baby with me already . I'm sorry I just need to vent since I have no one to talk to I'm all alone thanks for the time in reading my story .