Hello There. I can understand your concern, but it will be better if you post your symptoms first and then attach any reports like us reports etc. normally, the volume of a prostate gland is 20-30ml. also we need to know the size of the gland, post void volume and other details. 2mm calculus is a small calculus, it need not require any special medical efforts apart from pain management. drink lots of water and you will be fine. make it a habit to drink at least 1 glass of water every hour and you will be fine. avoid calculi causing foods like tomato, beets, chocolates, carbonated drinks etc. consult a general surgeon for further help. regards, Dr. Anil Kumar J Jain