I'd agree with getting your iron levels checked out too. I'm not feeling too bad considering that I'm having broken sleep at night, either because I need a potty run, or weird baby dreams, or rolling over onto my tummy, or because DS has been so damn unsettled the last few nights with high temps and what not.. but I'm not feeling too bad thank god!!!!!
Oh, and in regards to maternity leave - I'm due on the 19th/20th july and I am leaving work on the 4th July. Does that help at all? :-)