The thing that really got me was that after about 40 minutes of grizzling, I asked DH what we should do (assuming that he, like me, was lying there awake fretting about our unhappy child).....no, he wakes with a start and goes "who? what? what's going on?". Grr. I just told him to go back to sleep.
LOL That's what our house is like too!

Have you checked your MCHN info about wonder weeks? I found DD was very unsettled when having a wonder week. Hers were always a week or so earlier than on the list but regular just like the list. She slept through from 11pm till around 6am from 6weeks till around 10weeks then she woke around twice a night for feeds. By 9months she mostly slept through.

BUT when teething she will wake almost hourly some nights. AAARRRRGGGHHH!!!!!

She has always slept in her room right opposite ours and I can hear every little noise she makes (not a very soundproof house!). I used to find she would "surface" and I would LEAP out of bed and be almost running to her before I was even awake. I had to make myself stop and listen. Often she would settle herself but it did take a good while before I learned when I didnt need to go in there. I think many times I did go to her I probably actually woke her up properly, whereas if I didnt go she would have settled herself again.

So in answer to your question: once when DH got up at 2am to go to work, twice when DD cried in her sleep but resettled, once by the bloody dog barking at a possum. How many times did I get up? none