Yes True I am 100% agree with Scash. There is nothing patience cannot rebuild.

Scash: Op, leaving the house is not advisable.
There is nothing patience cannot rebuild. Ur sister in laws are shameless people dt took to fightin over deir brodas stuff wen dey ought to be in deir own hubbys house. But diaz nothin u can really do about it, TALK to ur husband. Let him knw that u were hurt by d way he manhandled u, and the way he stands to support his sisters, let him know how bad you feel... Den just be cool and patient.
Bone the kitchen. Cook ur food, take urs, husband and that of ur kid leave the rest for the sisters. U can even tell dem dt deir food is dia. Do not engage in a silent battle with them, prove that u re more matured and experienced.
If they are people that has a conscience, dey wld back off with time n den u can deal wt ur husband d 'woman way'.
Note, a woman that tinks shez wise always has problems in her marital home, its the wise woman that acts like shez dumb that takes control of everything easily

All the best