Morning ladies!
tiny Your DH should be considering himself lucky to be alive this morning IMO! My OH has been great about the tiredness, keeps telling me to go and take naps and doing nice things like cooking and cleaning whilst I am napping. Telling you he's sick and tired of you being tired is NOT enormously supportive. This might sound stupid, but have you got him to read a pregnancy book yet? My OH is reading one written for blokes and quite enjoying it, and it's been really useful as when I moan about things he will nod sagely and say "Yes the book said you might feel like that, it's normal" etc. He was blooming lovely anyway, but it's made him really understanding towards some of the things I say/feel/cry hysterically about!
Also I say girl based on the nice round skull, but will be interested to see if you're right - I've felt mine's a girl all the way through, but got a lot of boy votes on here from my 12 week scan! Hope the scan goes well 
Miss If you talk to HR they have to make reasonable allowances, if you haven't already had your risk assessment get them to put it on there that you need to park closer to the building. The risk assessment is to make your life easier (I got it in writing that I needed a new desk chair and got it within a week!)
coffee Yes to hitting the wall at 4pm, I've reverted to my afternoon nap around then!! Have just written out a loooong list of jobs to do today, we'll see how far I get.