I used to get heartburn once in awhile so tums or pepcid became my friend. in the last 4-5 months the syptoms have gotten alot worse. My thoat starts to hurt and my esophagus feels like there is acid burning it up. tums and stuff don't work anymore and now I have Nexium which dosen't seem to do much either. Is seems to be worse when I eat Tomatoes grapefruit or greasy food.

You should have your primary care doctor recommend you for a GI work-up. The GI doctor will detect your problem. You want to be sure that you don't have an ulcer or hiatal hernia.

Wish you well :)

Could be gerd could be ulcer could be gastritis,could be h.pylori related. Best get it checked .Take care.