I'm not the expert, but I believe if you feel something is on the verge of coming out (if you feel pain) you can do another flush.
I would try a coffee enema first, since this stimulates the liver. Also, I personally would want to get the olive oil out of my system so that the second flush would be successful (you know -- you don't have anything oily or fatty the day you're going to do your flush. I don't have anything oily or fatty even the day before).
Are you in pain? Or feeling better? My gallbladder "spoke" to me for a few days after my flushes. It didn't hurt, but I could feel it. It wasn't unpleasant, however. You shouldn't let yourself be in pain.