I hate to hear you are in pain.
I agree with Blueduck. Take a tablespoon of Epsom Salt
with warm water and pain should subside. if not, you can take another tablespoon.
If you can, stop eating and go for another flush.
After 15 flushes I´ve done so far, in two of them I had do go for a following flush since I had some pain after the flush.
I know that gb pain is awful, but you ought to be fine after flushing again. It seems your body is begging for another flush.
Make sure you watch your diet. No processed food, no chocolate, no deeep fried foods, no tomatoes, no caffeine, no fatty foods. These, among others, are very irritating for the gb.
Eat veggies, brown rice, fruits, especially apples.
Taking Gold Coin Grass or Chanka Piedra will also help you as these medicines help crunch stones and soften them.
Keep us posted.
Good luck !