Just came across this :)
DD slept like an log from about 5 weeks through to 18 months, when she had a terrible virus and was never the same after. She would be wide awake all night wanting to play, nothing seemed to work and we tried everything. I had a further 18 months of no sleep and I honestly do not know how I functioned. PND was still lingering on and coupled with only an hours or so sleep, my god I seriously was just like the walking dead.
My DD is 11 and sleeps like a log now and has done since the bad period ended but it is me that has sleep problems.
Unfortunately I have followed the exact same pattern as my Mum. We can be absolutely shattered and ready for bed at 9pm but we stay up as long as we can so we sleep longer. So we go to bed later say about 1am or 2am and then find it impossible to get up. If I do go to bed at 9pm, guaranteed no matter how shattered I am, I will wake up after a few hours and struggle to get back to sleep properly. I am a very light sleeper these days so it does not take much to wake me up. When I do wake up more often I wake up feeling sick and headachy which puts me at odds for rest of the day. I find myself having naps at about 4pm for an hour or so because I actually cannot keep awake, which leaves me disorientated for rest of evening, then I can't sleep properly when I do go to bed. It is a vicious circle for me. I can go for a week of half decent sleep, a week of proper deep sleep that leaves me disorientated or a week of hardly any sleep at all. It drives me insane and I don't know how to change it.
Like most of these posters, my tiredness makes me less tolerant, short of patience, shouty, ranty, grumpy, miserable, you name it. I hate feeling that way but lack of sleep is soooooo awful. It doesn't take much for somebody to get their head bitten off for no reason. My poor DD I think has just got used to it now and just rolls her eyes, and tells me to go to bed earlier. I desperately try not to take it out on her but as we know when kids are kicking off, it is easy to lose it at best of times let alone when you are tired.
I miss the days of a decent nights sleep but for me I have just got used to how it is now.