I am 61 and on Lansoprazole for acid. I used to suffer a lot from heart burn. Now I am taking this med every day the pain has gone down to my lower abdomen and at night. My sleeping is of very poor quality because of the pain which interrupts my sleep and eventually will wake me up around 3 am. When I wake up I will go flat on my back or into the fetal position and fart a storm....on and on some lasting a few seconds continuously, which makes me laugh at myself. Then all the pain is gone and I am back to normal. I have done endoscopy & colonoscopy which came negative. How can I fix this gas pain and get a good night's sleep.