Paranoid around trusted people

At random times during the day, I get the feeling my loved ones are angry with me or going to do something bad to me. One example is I'll be making myself a plate of food or something and if someone (grandmother, aunt, etc.) is there with me I won't let my plate leave my sight in fear of them spitting in my food or something. Or when they walk by I cringe in fear they're going to hit me.