Hi expert docs, While having sex I feel pain in penis tip initially few seconds . ( I am newly married person few months only) How to treat it, my stones were arround 5 or 6 mm ... And use to get pain in left side of abdomen .. now that pain has stopped as I started drinking water more and tables like cystone  as per Doctor recommendations and sometimes I feeling pain in penis or some movement due to low water Intakes. Kindly guide me .