Ha ha loving this thread!
Totally get the wetting yourself (and I am only 26 weeks). I had gastroenteritis a few weeks back - it was horrendous 
That you cannot go anywhere without working out where the nearest toilets are first. If there are no loos, then I don't go there now!
That all of my self control that i pride myself on to not eat totally rubbish, and the ability to leave chocolate in the fridge has totally gone out the window.
That I would have an incredible sex drive - while my husband seems to be totally off the whole thing 
That you do not feel blooming in your second trimester.
That what you do becomes everyone's business - I am dying to cut the grass, but cannot face on the onslaught of disapproval.... oh and "Yes I have suffered with morning sickness all day, and yes I do have some cravings (as well as other nasties, would you like to know those too)?"
That I would become very protective over my bump in the swimming pool.
That 'nesting' doesn't happen near the end - I have started baking cakes - I mean FGS, the closest I have ever come to baking cakes, is opening a packet mix and adding water!
That you wake up in the middle of the night Starving.....