I had a few glasses of red wine last night and the colour of my urine was slightly darker n with a slight tint of pink shade.Is this normal? Prior to this,I've been experiencing for the past few days some pressure/crampy feeling at the abdomen/bladder region and have also noticed slight darker urine. Am a bit concerned over this symptoms especially when I've previously had kidney stones and had ESWL performed couple of years ago.Hope to find out some answers.Thanks!Justin