Rude inlaws

I apologize now - this is going to be long. I am 22 weeks pregnant with my first child. My inlaws live 7 hours away; my husband was the first to ever move away from their hometown (at the age of 30!). This past Tuesday my hubby asked me if I had talked to his mom because his sister told him their mom was coming to visit (and stay with) us for the weekend and asked to bring our 3 year old nephew with her. But neither my hubby nor I had spoken with his mother about it at all. He finally got a hold of his mother that evening and we were told - not asked - that she was arriving the next day and staying with us until Sunday. Obviously my hubby and I had an argument about it, he agreed it was inconsiderate but said she was his mom and we couldn't say no. Then on Wednesday my hubby finds out that our niece has lice... but her brother (our 3 year old nephew that's being brought to our house with my uninvited MIL) SUPPOSEDLY didn't have any signs of it so he's still coming to visit. Great. So they supposedly left at 8:30 on Wednesday morning for the 7 hour trip but they weren't even close to our house by 8:30 that night. At 11 pm I had to get out of bed, get in my car, and go SEARCH for them several miles from my house IN THE POURING RAIN because 1) she didn't want to drive our mountain roads by using our perfect directions, she wanted to follow someone and 2) she couldn't properly describe where she was. So at 22 weeks pregnant I had to put my unborn child in danger to go find her so she could get to our house that's she's already been to several times. Then on Thursday she completely takes over my kitchen, makes a mess and puts everything back in the wrong place even though I told her to leave it and I'd put it away (just like her daughters did when they visited in July - it took me weeks to correct everything). On Friday I was supposed to meet my friend that I haven't seen in 2 years because she lives 9 hours away for an afternoon of outlet shopping and dinner; this had been planned for weeks! But due to the impromptu unwelcome guests that I had to bring along, I got 15 minutes of rushed shopping before having to leave to make our dinner reservations. (My inlaws can't be on time to save their lives, I had to lie about what time our wedding started so they wouldn't be late!) Maybe I'm extra aggrevated about that because I was supposed to be having fun with my friend while shopping for my son for the first time. Then yesterday I got to spend my Saturday battling the crowds to find a Halloween costume for our nephew because his mother couldn't be bothered to buy one and send it with him and my MIL refused to leave our house while we were at work on Thursday and Friday. Because that's so what I want to do at 22 weeks pregnant (sarcasm). Last night I had a hard time trying to get to sleep because not only am I extremely uncomfortable at this point in my pregnancy, but I was also being kept awake by the beeping of buttons being pushed on my washer and dryer til 1 am. This morning I was woken up at 4 am by the banging and clanging in my kitchen. Thank god they're getting ready to leave right now because I'm about to snap. They've always annoyed me a little here (what inlaws don't?) and there but we don't have a bad relationship. Am I just being a moody pregnant woman? Can I be rude and say that I don't want my inlaws to stay with us for the remainder of my pregnancy and for the first few months after the baby is born? I mean, they're welcome to visit (with more notice, of course) but there are hotels nearby... Their visits seem to do nothing but raise my anxiety and stress levels to a danger zone which can cause harm to my unborn baby as well as my marriage, neither of which do I want. If you've read all of this, thanks for letting me vent.