just want some damn quiet time

My hubby and I just bought our first house at the beginning of December and I am 8 months pregnant. He keeps inviting his sister over almost everyday and don't get me wrong I love her but she has her 3 unruly kids that come over and they broke my computer mouse even though I told him not to let them use my computer. I told him so many times to just talk to me before you start inviting people over  and he of course never does. It's almost like he doesn't like being at home with just me.