Hi DD!
MY Tummy immediately after birth (with both kids) when flat. It felt a little pudgy below the bellow button, but i could walk out of the labour room without people knowing i just had a baby. In saying this is not always the case
As for the 6 pack... ask to see RachelM's lol ... she has a 6 pack after children!!!

Pain - yes i had a lot of vagy pain.. #1 no tearing and #2 2nd degree - Mostly hurt to sit directly on it - if i sat to the side it was ok. Took a few weeks. More than anything i got bad hemmoroids with #2 and they were worse than the vag pain

DTD - took 6 months with DD for me to relax enough to enjoy it. Esp with BFing DTD and lubrication dont often go hand in hand lol.. so you need to take it easy. I think apart from the obvious - with stitches and tearing etc - the emotional side of letting go enough to DTD is worse than the physical discomfort its just scary thats all. but yes it does feel good again!!!

BFing and weight loss. I put on 14 kg with #2 and i have lost all bar 1 kg with BFing. i honestly found it to be great. The same happened with #1... but i ended up lossingmore weight than i had previously BUt i also put it down to running around, forgetting to eat and being awake longer hours!!!