Sorry you are not getting any sleep Excitedmum2b - have you tried exercising to make yourself more tired? I go to Aqual natal classes which make me sleep like a baby!
I find that I have to get up as soon as i wake up now, otherwise if i oversleep, I wont get to sleep at all at nights. I was loving the napping too
Perhaps anxiety and stress at keeping your OH awake isnt helping either - I wouldnt recommend sleeping on the floor.