Hi,for the last 3weeks I have been having like a pressure feeling in my rectum,messy stools involving a lot of wiping,sometimes passing a lot if gas maybe 50times in a day,and stomach rumblings,I ve has a stool test and blood tests done no sign of bacteria,I am 29yo male.also suffered heartburn for 3years which I take omeprazole for. Any suggestions? Thankyou.