Hi Willow. The Thursday before my DD was born (on Wednesday but my waters broke 1am Tuesday) my was cervic was long, firm and shut and my Ob told me not to worry about packing or getting excited as it wasn't going to happen any time soon but low and behold within a week my DD was in my arms so all is not lost.
Keep going with your EPO and maybe try a few other things too. Don't forget the good old nipple stimulation and sex.
Sending you heaps of labour vibes. Good luck!!!!