Thank you Dancing Girl that is really helpful, I've done so much research my head is reeling! Here's hoping this HRT is a good one for me, I just need to sleep, that's all.
CLKD - thanks for asking, I don't get a great deal of support in some respects but in others I do. School is kind of ok, though they need to sort out some stuff and his dad is ok - he has him every other weekend. Working in the holidays is pretty much impossible though and if I wasn't self employed I'd be stuffed.
I really do not get enough time to myself but things are much easier now my son is older and I'm expecting and hoping it will get easier still. At least he has stopped biting people :-)