Gas pains/heartburn help?!

hi all..i have not had a fill in months and have been steady not really losing but notgainingeither....ok, so as of late no matter what i eat...i get terrible gas pains for about 45 min after...even liquids if its to early in the day...plus i have bad heartburn also...i feel like i spend all day taking tums and gas x...this gas will come even after i have only hada few bites of food also....do u think there is something wrong? or do u think the band may have slightly moved and i may need an unfill..my doc always says that sometimess ur band can move a tiny bit and it makes a difference in the tightness....i have a call in but i wont hear till tomorrow, but i am tired of being miserable after only a bite or 2...