has anyone been so bad with their nerves,.

Try not to feel embarrassed, i would say it's got a lot to do with the stress you've been put under. I'm not sure what advice to offer, other than maybe try some relaxation breathing before you go to sleep and to remember that this house is where you live and these people are in your space, so make them work there days around you, if you need to use the toilet late at night and they are sleeping, well tough, you go ahead and use that toilet, or do whatever else you need to do in the house.

stress can cause this, and if you have not been sleeping much can cause it too, you shouldnt feel embarrased and like bob said, its your house where you live, they should work around you, i wouldnt feel put out of place in my own home, they dont like something well its tough, they can always find another place to live.
put yourself first and try relax i hope your okay xx