If you're taking epo and are trying to get pregnant, please remember you must stop taking it after ovulation every month (once your periods resume, of course). Epo causes uterine contractions that "can" interfere with implantation so is not recommended during the luteal phase.
While I have not seen any information that would indicate that epo would be an herbal choice for restarting absent periods, it is a hormone regulator so it may help. It's generally used for pms symptoms and as a treatment for rheumatoid arthritis, as well.
I have to say, 8 months is an unusually long time for your periods to be absent. The range is generally 3 - 6 months in those that experience ammenohrea after pill use. If your menses don't resume in a short while, I would ask to see an ob/gyn (assuming you're not already).
Good luck and I hope everything goes back to normal for you soon.