You are probably very close now ... have you got a nesting place all set up for her? Has she begun to explore it and dig around in it yet? If you haven't already, please take a moment to read this thread
to better prepare yourself for what is to come.
When the time comes, if you need help finding a low- or even no-cost spay/neuter clinic in your area, just let us know and we may be able to help.
Best of luck, we are all wishing for a safe, uneventful delivery for you!