Taking personal things from us while I'm too sick to notice

Well, I'm on a medical rest for months now.. And I'm just really stressed over the fact that my sisters in law are taking our personal household things without our consent. Our electricfan, refrigirator, fully automatic washing machine and other small items like water bottles, air purifier, and I don't know what else.. I can't check our things anymore since we just moved in with them. And I'm really sick. Maybe they're thinking that they'll only be borrowing it until I need them again but my point is, they should've informed me first. Not just my husband. I'm the one who uses all those things because it's my daily tools as a wife. I just want to take care of our things because we're not rich at all. We cant afford to buy those things all over again. And knowing them, they're not too careful on handling things. I should be expecting my newly bought items to be worn out or broken when they return it to us. I feel so disrespected. And taken advantage of. To think that they have more money than we do. I start to miss my family now.. Because with them, I have been disciplined to respect the posessions of others and to take good care of it if it was only borrowed. :( we won't do this to them. But why are they doing this to us? I especially hate the idea that my things went to benefit one of my hatest persons, my sister-in-law's husband. I think he wants my unborn baby to be miscarried because most of the time, when my parents-in-law asks him to drive me to the doctor, he would drive really fast and then hit the break too hard. And he even drove over an elevated sidewalk despite knowing that I have pregnancy complications. I feel so abused. :( To think that I tried my best to be respectful and nice to them.