Desperately seeking sleep...

How does this happen?? I think it has been established that David works nights. He goes in around 11pm and gets home -lately- around noon the next day. (Don't get me wrong, we are happy he has a job, I am not complaining...) So last night he is getting ready to leave and Ryan starts crying. I look at David and say 'Here we go...' You see, Ryan has this thing where he is TERRIFIED of the dark and being alone in his room. He wakes up at least 2 times each night crying. When David is working -and when he's not, come to think of it...- I end up with he and Tyler in bed with me every night. So I am sure this is the start to another long night. I had NO IDEA what kind of long night I was in for. I don't rush to him, I want to see if he will work it out on his own. Next thing I know, he is by my side throwing up. Great! He continues to do this every 10-15 minutes until about 3:30am. (don't feel sorry for me yet.) At about 2:45, I hear someone in the bathroom. Oh, it's Michael throwing up! What? both of them??? Oh no, as I am helping Michael I hear a faint 'mom...' Amanda then informs me her tummy hurts. No way!!! Eventually she ends up throwing up too. At this point, all the lights are on in the house, Tyler is running around thinking it is morning, and Christina is looking for a place to sleep that she doesn't have to hear all the 'noise'. I start laundry. I figure I'm up, I may as well get a jump on the many loads I will ineveitably need to do. It was 4:42 when I finally got to lay down. Not for long... At 5:15 Tyler starts throwing up too! Can you believe this? Does this kind of thing happen?? I have had a total of -maybe- an hour of sleep all night, and now I have 4 kids home sick. All of whom are asking for a drink of water. So, here I am, it's 11:30am, and I am exhausted. David is home and the kids are starting to fall asleep one by one. I am hoping to get a little shut eye soon! So, stay away from our house! You don't want whatever bug we have.