Hi, Welcome to healthcare magic community forum..
Mention the details of your age and since when are you having these symptoms???
Burning sensation during urination is an indication of urinary tract infection
. This needs evaluation and if necessary a course of antibiotics..
Intestinal hypermotility conditions such as Irritable bowel syndrome
are one of the common cause where one feels to pass stools immediately after a meal.
If your symptom has been a long standing one, it can be an indication of IBS
Discuss with a doctor regarding a doctor (through a chat or personally) or post your replies with the details for more appropriate answer..