If the hairs were treated properly they shouldn't grow anymore and will take about two weeks to shed out on their own. If those hairs are longer tomorrow you know for sure it didn't work, but if they are generally the same than you need to just wait till they fall out.
These are defintely questions you need to be discussing with the person who treated you. Please call the person up and let them know of your concerns.
I'm leary of Epilight because it's a flashbulb system and not a true laser. I had MUCH better results with GentleLASE. But even then ...that only lasted about five years.
You can read over comments by others who have tried Epilight here:
http://www.consumerbeware.com/forum/....asp?ForumID=3
Do a search there for Epilight.