Pardon me for being negative on your thread but: WTH is up with doulas in this DDC!? This is the THIRD not-so-hot doula story in one due date group! Ugh! Sorry...
If you can get a copy, I'd get ahold of The Birth Partner and maybe Mothering the Mother. I'll poke around and see what else I can find ASAP to recommend. The best thing you can tell him is to trust you and to trust birth. Are you havng baby at hospital or home (I'm sorry, I forgot, forgive my feeble mind?) I'm guessing hospital. Perhaps you can call up there and ask if they have natural labor friendly nurses and find out the names of them on each shift, that way when you go in, you can request one of them. Trust me, nurses love to be asked for by name
Have your DH spend time witn you massaging you and finding places on your body that feel good to touch, write them down if need be. Practice relaxing in each other's arms. I'm sure I can think of better answers than this! How into it is your DH? I mean, how on board is he with being the primary support like that? Was he counting on your doula's presence? If he was, he'll really need to work a little harder than most to get into the groove. Something else is that he (well, you both) needs to remember that birth can be overwhelming for partners (which is why doulas can be such handy folks!) and if he gets overwhelmed, you two need to come up with strategies to deal together. This may indeed mean utilizing nursing staff or possibly a friend who could come and help. Did your doula have a back-up doula? I'm so sorry this has heppened to you!!!