I feel like i've had the body flu for awhile now.... there's blood in my stool and mucus when wipe. i always feel light headed like i'm gonna pass out?

Go In Now: Blood in the stool is a reason to get prompt medical evaluation. Also, if you have a gastrointestinal bug which causes bloody stools, again is a reason to go in for an evaluation. Only a few causes of gastroenteritis have bloody stool as a finding and may need antibiotics. Lightheadedness/almost passing out could represent blood loss, or more commonly significant dehydration.