Whole life, 1 normal size, shape, consistency bm 1st thing in morn. last 4 months, 1 normal bm followed by a 2nd bm within 30min less than normal, slushy or very thin small pieces (thin more often) no pain, no weight loss, feel normal, worrisome?

This definitely: qualifies as a "yes" response to "Have you had any change in bowel habits?" and in an individual, male or female, your age should trigger a colon examination ... I would say a colonoscopy...even though you have no other accompanying symptoms. Please discuss with your physician as soon as you can and plan for this test. Good wishes:)