I've been thinking about you and kitty and hope very much that everything will be fine. I think I'd be on the phone to the vet asap this morning relaying the story, how much time has passed, when contractions happened, the blood etc. and see what they say. She may or may not need medical intervention. If you don't have a vet, call a good vet hospital and appeal to their sympathies to help you - you best say you rescued and are adopting this cat, otherwise they may be less than sympathetic that she is preggers and that you may not be able to bring her in. How was her health going into this? Robust? Good appetite? Good diet? Does she have a nice quiet dark "nest" (no commotion - with only you checking on her) where she can settle in to get "in the zone" to have the babies?
Just a word of caution to anyone else in the same boat, that is, indicating they don't have the resources to get vet care. It is ALWAYS more expensive to deal with problems that result from not getting these wondrous beings spayed and neutered (the cancers later on, for one thing). I mentioned earlier in this thread a very pregnant homeless cat that I took in. One of her babies took ill and it was nearly $3,000 for 2 days in hospital (tests, etc.). (ouch, I know - I work 3 jobs so I do not have to deny anything in my care medical help). Spay/neuter is $51 for males and $65 for females with Friends of Animals certificates (that can be redeemed at participating vets offices). The difference between these figures and that kitten hospital bill is staggering. If Samantha had not been so far along when I found her I definitely would have gotten her spayed, like every other one of my rescues (where I paid much higher prices before finally turning to Friends of Animals - I can help more animals that way). While I found good homes for Sam's babies, I knew full well that every home adopting one of her kittens would not have a place for a shelter kitten, thus condemning to death as many shelter kittens as Sam had babies. Please forgive me for using your thread to make this point, but it is heartbreaking when I see cats and dogs denied medical care because people cannot afford the costs or when I see them have to die because there are no homes for them - I've seen too much to ever sleep through the night again.
I want to thank you, both for seeking assistance to help your cat - you clearly care that she and her babies fare well - and also for providing a forum (please forgive) where maybe other folks will be able to get some info about relative costs and consider spay/neuter when they might not have before. I am rooting for your kitty mom and her babies, and hope all will be well. Sam's babies were the most endearing beings in the world - it was such a joy - one I will never experience again unless another of my rescues is already very pregnant when I find her - I will never forget how exquisite those kittens were (I wanted to keep them all!). Sending wishes for a very happy outcome here.
JJ