
Originally Posted by
rockbottom
Lighter red doesn't necessarily mean less serious. You could have colitis near the end of your large intestine.
If it's a lot of blood and consistent, you need to get to the doctor asap. It's possible that you're not seeing it all, and that you could bleed out. A quick blood test can determine how much blood you've lost.
On the other hand, if you've had large shits, anal activity, or a fissure (litttle crack in your anus), it's probably nothing. If you have no pain, one way to check is to dab a bit while your clean. If you get little red blots, its probably superficial.
Also watch if you're getting dizzy when standing up.