Yes, please find some pills that are not expired.
Also, use backup birth control for the next month (for a full month after you get pills that are not expired).
There's no point in using dubious bcp - get to a clinic (like planned parenthood) and get your own prescription. Shop around online and see if you can find a place that can fill the prescription for you affordably.
You should be seeing a gyno regularly. Your health is too important. If you are sexually active, you definitely need to have a pelvic exam every year and regular paps.