Frequent bowel movements from last 2 yea

It started 2 years back when suddenly i started experiencing frequent and sudden bowel movements. Consulted few physicians and they suspected IBS. Got few medicines like anxiety dipressents,  probiotic etc. Till today situation remains the same. Moreover got worse with time. Now as of today my symptoms are as follows. 1. Very frequent bowel movements , 10-12 per day. 2. Bowel movements after every meal and diarrhoea especially after breakfast. 3. Abdominal discomforts starts after lunch and gets worse as the day progresses. Severe problem of frequent and small bowel movements after dinner for complete night till stomach gets empty. 4. Occasionally fresh blood seen in the stool and sometimes thick maroon colored stool as well. 5. Stool is inconsistent, neither constipated nor diarrhoea. Sometimes dark colour stool as well. 6. Inability to hold stool. 7. Very dull abdominal pain