Black and Clay looking Stools?

For the past two days, i've notice that i've had black/clay stools, but other consequently the color they are pretty much normal, i've never bled or anything similar to that. Im only 16, i exercise, and havnt have any major physical bad health. The reason im so concerned is that i looked it up on the internet and adjectives i get is VERY gloomy possibilities. The only item i can think of is that friday and saturday, i drank comparatively a bit, and snorted Painkillers (which is something i DONT normall do, it was dumb... don't donate me a drug lecture im never doing that stuff again) but yea, any relieve will be greatly appreciated... THanksBlack and Clay looking Stools?
Black stools is usually a sign that there is blood contained by the stool. You really need to hold it checked out.
sounds like you enjoy blood in your stool =see you Dr
looks close to your low on iron try taking some vitamin suppliments
If you took an iron suppliment, that would do as you described.