Are you vomitting stomach acid? If so I had this same problem.

I have/had a hole in the lining of my stomach from indigestion.
I took Prilosec OTC and it went away, then came back again.

Went to the doctor, he gave me some free Nexiums, then told me to take Prilosec OTC for atleast a month ot two. This will keep the acid out of my stomach long enough for it to repair the hole.

Eitherway, goto the doctor and make sure it isnt an ulcer. Better to take care of it NOW then LATER.

I knew I didnt have an ulcer but couldnt STAND feeling sick EVERY day.
I feel good now,

Best of luck!

p.s Eating before you goto bed is a BAD idea...even though I slip once in awhile. It will cause indigestion and you wont sleep well. (Your body must continue to work the stomach while your body tries to rest)