Go to your vet and get as much advice you can get on whelping. Set up an xray around day 55. Then get online and read as much as you can. If you have questions ask..sometimes you might not like the answers but let it roll off your back. Your girl is more important now.
I hope everything goes text book for you. Not to be mean but whelping a litter and raising it can run into the 1000's. My last girl whelped 2 nautral and had a have a csection to get the last one out.. just with that alone I met my 1000 dollars. Make sure you have an emergency fund. Alot of vets will turn you out the door if you can't pay. Some doesn't care they want the money then treat. I think it is terrible but just how it is.
Next time if you can't afford to spay her. Make sure she is a crate all the time unless you are with her without the males around. It only takes a few seconds and they can tie. If I could I would send mine away for a few weeks. I crate them and rotate out durnng the day to give the breaks. During the night all are crated. It might sound cruel but it is how it has to be when in have intact dogs.
__________________ Melissa 
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