I can't seem to finish a bm, it becomes lazy, i had a big solid bm a few days ago which was coated in blood at the end, should i be concerned?

Blood in stool: Bloody bowel movements can occur for many reasons. Hemorrhoids are a common cause but there are many more worrisome causes that should be ruled out. Colon cancers and inflammatory conditions called colitis can present this way as well. Anyone with blood in the stool should seek the advice of their doctor and consider colonoscopy to further evaluate.