Imagine this! Advice needed like asap!

Imagine your husband's mother is treating her son and soon to be father of my child as if his a child,controlling his life and texts him every 5 mins calling him "my baby" and so much more! whilst we all live under the same roof because it financially strengthens us(I wont lie) we just can't afford to move at all, I'm 20 and he is 23 years old...I'm not a bad person nor want to keep him away from his mother,I lost my mom recently my dad literally moved on the next day with another woman(sick) iv sacrificed family, am I wrong to feel alone? Like him and his mom against the world! Ugh what do I do?