Thank you everyone! Feel so much better and have had no grumpiness in night or this morning ! From me that is.
Jajas, I think you're right - its so hard to have this sudden change from being so selfish and self-focussed to being utterly devoted to someone else no matter how unreasonable their demands are! But then any younger and I wouldn't have been able to give to him emotionally.
Whats really embarrassing is that I work in childcare with behaviour issues, so I know all the behaviour stuff. Actually when I think of it, I'm fine when there's an issue - when he started hitting me I did all the calm removing myself and explaining to him and distraction and it stopped within weeks and he never hits me now. This is why its utterly my issue - last night was just food on floor, but coupled with very tired (as always), bit of a busy week ahead, tons of washing up to get sorted, some phone calls to make etc., and a day of about 100 calm 'no, lets do something else instead). So I don't think there's any problem with him, its me that has a behaviour problem !
kami - have found same thing - when in a good mood I've changed conflict to a game of tickles or chase, and it works really well - have done so all morning think its a fab thing and I must remember it more.
And yes sakura - you made me remember my mum sitting me and sister down to explain that she'd been a snappy cow because she had pmt (we were 8 and 10). She has her faults, but you do know where you are with her. I never remember being scared of her shouting, but it was / is a bit scary when she would get withdrawn.
Feeling a lot better, so thank you all for showing me I'm not alone and giving me tips. I just see lots of calm, reasonable mummies, and look and think how do you do that? It must be a personality thing. I think rules might help me - I decided I'd never smack (not with my temper), so maybe I need to extend that to shouting. I have managed to stop swearing, but I think the meaning behind my 'that's very silly' is as bad as 'that's f-ing stupid', so maybe I'll work on body language etc.
Am desperate to have number 2 (because deep down I adore DS beyond words), so think I really need to get a grip before the challenges and fatigue increase. Thanks again tons. I knew MN would help xxx