Sleep Deprivation - rock bottom

I have hit rock bottom, but think I may have found the key. I am praying anyway. Today I have been utterly exhausted. I've been so grumpy at work. I have been mean, rude, cold, uninterested, and impatient. Of course all I want to do is to come home and rest and see my family of course, but when I do get home I find out that Trouble has napped for a total of 5 1/2 hours today! DUH! First off, he woke up after a little less than an hour and the nanny gave him Tylenol because he's teething pretty bad and then he fell back asleep a little later and just kept on sleeping. She was being lazy. That' s it - I know it and it pisses me off. Normally she is great, but now, after craving sleep all day long, I'm going to have a looooong night ahead of me, and why? So she can get paid to sit on her butt while my baby sleeps and so Trouble can catch up on all the sleep he misses at nighttime. I read up on how much sleep he needs at this age now and have prepared a long speech for the nanny come morning. I just have to pray I can make it through tonight and tomorrow and that this is the key I have been looking for. I am to tears. Nobody understands what it's like to get up every 2 - 4 hours every night for a year but me. Or at least that's how I feel.