Depending upon what type of stone they are, it usually means that they are encased in much larger glob of thick bile; like a small nut in a hard jelly sweet.
Or, stones have formed below a sludge layer. The pieces of sludge can consist of one large piece (sometime the size of the gall bladder) to several smaller pieces.
Above the sludge layer are green pea like stones known as floaters which by there nature block the neck of the gallbladder.
There are only two option open to you, surgery or liver-flush. Neither is a pleasant route but the liver-flush isn't destructive and you must bear in mind that gallbladder surgery is 60% successful.
The full criteria for surgery is:
Gallstones present on ultrasound
Thickened gallbladder wall
Dilated common bile duct
Elevated blood amylase or lipase
A person was told they had 3mm stones present on ultrasound. At this size they are known as gravel after 5 Hulda Clark e Plus (HC+) liver-flushes yielded the following:
There isn't any way to avoid after effects except you to be prepared. Epsom Salts or Apple Cider Vinegar can give relief. Stay calm and relaxed and the attack will pass.