Sounds nice to be having your owñ house built. If I had the money, in your position I would rent an AirBnb and get away from people who are compromising your health. If they are toxic I would make careful, deliberate plans to get away from them for good. They won't turn into the parents you deserve this week, next month or in 5 years. They sound disrespectful of you. I don't want to be around people who disrespect me, nevermind if I'm physically vulnerable. You shouldn't have to protect yourself from people like this. Relatives are not exempted from selfish behavior. You don't include any details so maybe you just want to let off steam. But in any case, start caring for yourself right now. Put yourself first. I'm a lot older than you and