I know that feeling, DH works like a crazy man, he has just taken on a private job as well so some nights he's not getting home till gone 10/11 at night. Luckily over this next week (when im ovulating) he isnt going to be home too late or think we would both be shattered.
I think i am quite lucky really with my cycles, the longest one I have had is 31 days.
Got my first high on my CBFL this morning (CD9) so we are all go, i will get that BFP this cycle and have my little one in time for my birthday at the end of November, that would be the best present I could imagine!