Whenshe I was the same last time at work - couldn't care less! Well not totally I tried to tie things up as best as I could and I was still working hard right up to the end but I was not nearly as motivated - when you know you are finishing up it is a difficult to be enthusiastic about it 
Cravings for me have changed week to week - I am enjoying cheese sandwiches just now, salads, Ice lollies (can't get enough of them) and generally anything a little spicy. I think about baked potatoes with prawn Marie rose and a side salad a lot too!!
All week I have been dreaming about spicy onions and poppadoms so this weekend my mission is to get some from the Indian takeaway 
But my cravings have been weird - one minute I cannot get enough of something and the next it is making me heave - like smoked salmon and avocados. The thought of smoked salmon right now is awful. Then there was picked onion and salt and vinegar crisps but now I'm not interested in them at all.
The only thing that I have consistently been able to tolerate is sweet stuff, like cakes and biscuits and ice cream. I am trying hard not to give into this though as I am scared that I will get self induced diabetes - although I was the same last pregnancy and it eased a bit so hopefully will be the same this time.
Sorry to talk about food so much - it's amazing how important food becomes when you are pregnant - it makes you feel so ill or cures you of sickness!!!
Hope u are all having a good day. I am 12+5 and feeling ok today. Occasional nausea but bearable. Still have toilet issues though 