I think you should tell your husband that you're tired to do all the housework since you are 9 months pregnant. Then your husband should told his family member to share the job. e.g. you shouldn't mop the floor. It is too heavy for you la.
Tell your husband that you do not want to do the housework anymore and if you keep on do so, you are going to explode emotionally.
And ask if he can move out with you, or at least you only do the part for your husband and you, e.g. do laundry only for yourselves, and take time to rest~ Take a nap every afternoon~
You are a wife, not a maid. Make youself comfortable, this will be best for your baby and you~