I have been experiencing pain in chest and being bloated after eating and during sleep at night. I usually feel this around 10:30pm until morning. I went to ER during night and was diagnosed with acid reflux but the medication doesn't seem to be working. I also changed my eating to a bland diet. Nothing seems to help. How do I know if this is acid reflux or gall bladder? Is there something else that could be going on that I do not know? If anyone has insight or info about either of these two names please write.