How To Treat Abdominal Bloating?

I AM A 71 YEAR OLD WOMAN WHO HAS HAD SEVERE BLOATING AFTER A BOUT OF CONSTIPATION, I AM TAKING POLYETHLENE GLYCOL DAILY WHICH HAS CURED MY CONSTIPATION BUT CONTINUE TO BE BLOATED, I AM ALSO TAKING A SIMTHICONE TABLET 3 TIME A DAY BUT IT IS NOT RELEAVING THE BLOATING MAKING IT DIFFICULT TO EAT AT ALL, PLEASE GIVE ME SOME INSIGHT ON HOW TO BEST RELEAVE THIS BLOATING