Finally got it out!
I've had a stone that's been stuck holding up the rest for the past 8 flushes, so before last night's flush (#16) I took 6000mg of Malic Acid the day before and on the day of the flush. I know this seems like a lot but I read about fibromyalgia people taking this much daily, so I figured that the toxicity level must be much higher. Anyway, it must have done the trick because today I have finally gotten the damn thing out, along with more decent sized stones and chaff. This is the first time I have gotten chaff, and I really hope it means I'll start to see symptom reminission. Also, the pain I have in my right side and chest was gone, but it returned slightly by morning because of more stones moving up.
Taking malic acid the day before the flush, and on the day of it works. Maybe the dose I took was more than enough, but it doesn't hurt if you want to try it.
PS I used Magnesium Malate which is a combination of Magnesium and Malic Acid, it works just as well.