Help! Please someone read

I'm living at home and I'm pregnant it's a 3 bed house and 8 people live here! Mum and dad and my little baby sister in big room, then my 4 in other and me and my brother share at the min, but I'm not really there so he's alone but when I have baby I have to go there all time, will midwife say anyhing about it been to overcrowded cus I'm so scared, it's only till I'm 18 and get my own please, I'll be out soon, but my brother has to go with my sisters room he's only 7, please help! I'm so scared😪😪 uk?"!