Large globules of blood after loose bowel motion, is this a cause for concern? also stomach pains, intermittent.

Ischemic colitis?: Blood in stool is a warning sign. Brisk bleeding warrants emergency care. Causes of bleeding may be predictable (e.G rectal trauma), but evaluation is always appropriate, particularly for an older individual such as yourself with associated risk of: ischemic colitis, enteric infection (c.Difficile?), colon tumors. Don't wait until you're passing out--get to the hospital now please.