am I being dramatic???

I'm 9 months pregnant and my sister in law and her hubby are living with us for a few months. As of late they have been so inconsiderate. They dont clean after themselves, the room they stay in is a disaster 3 baskets of clothes piled high, cups, snacks and wrappers all over the room, they do their laundry and leave it in the laundry room and just re-start the dryer when they need a specific item. They leave their dirty dishes all over the house. I'm OVER IT! I finally brought it up because I got tired of "kindly reminding" them or of cleaning after them. And they had the nerve to tell me I am a stay at home mom and that's what I'm here for... TF!?!?! I have a toddler to care for and my own shit to take care of. I can barely do anything these days bc my belly gets on the way. My hubby will be here soon I dont know how to tell him. He has a temper and will kick them out in a heartbeat he doesn't tolerate crap like that especially towards me. he hasn't seen the mess or what I'm talking about bc he leaves early and comes home late and by then I've taken care of the issue and he doesn't go into their room. How should I tell him? Should I talk to them 1st and if nothing changes then tell my husband?