Blue or green
This color can be the result of a bacterial infection or a rare genetic disorder, but both are pretty uncommon. That's why if your wizz is blue, it's probably from food dye or medication, which often turn your urine green because blue dyes tend to react with the natural yellow in your pee.
Red or pink
For women, seeing a little red in your pee is a standard monthly event. But if you're seeing it at other times too, it can be the body's way of alluding to something more serious, like an infection or kidney disease. For guys, it can also be a symptom of a prostate condition.
Or it could also just be that you've eaten a lot of beets, blueberries, or rhubarb. According to Dr. Sam, there will likely be other indicators that tell you it's not coming from the pie you ate earlier.
"If it's burning or you're having a pink-reddish color, something is going on in the kidney," she says. "If you have no symptoms or burning at all, but you also haven't eaten those things, you may still want to see your doctor."
A sweet smell
If your pee starts to smell sugary, don't get too excited about this new, unusual sensation -- it could be a symptom of diabetes. Dr. Sam says it's a sign of too much glucose in the blood. If you also find yourself heading to the bathroom a little too frequently, it's definitely time to seek medical attention.
It really hurts
If it hurts when you pee, it probably means you have a urinary tract infection. Home remedies like cranberry juice and drinking water can help with relief, but ultimately you'll need antibiotics.
Heading to the doctor probably isn't a bad idea anyway. Dr. Sam warns that stinging could also be your body's way of saying, "Hey there. You've got an STD."
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Barbara Woolsey is a Berlin-based writer who now feels better about hating beets and rhubarb. Read more of her stuff on Facebook and Twitter.