So Stressed 😫

My wife and I have been trying to conceive via IUI for 4 months now. We're finally there and our living situation is just so stressful and I'm freaking out her stress level is not good for such a new pregnancy. We live in an apartment owned by her parents and they are not making it easy on us. Her brother is also a selfish prick and knows exactly what to do and say to amp her up (he does not live with us, just harasses us). I'm just worried her stress level is too high and I don't know what to do. She needs their support, not their petty bullshit.