I've been having stomach problems every morning I get up early (6 am). After about thirty minutes or so of being up i'm suddenly hit with this dull pain in my lower stomach. I feel nausea and can't eat. On a few occassions, it's gotten so bad that I throw up. The pain tends to come in waves, I get better and then I hurt again and it usually lasts until 10 or so. One morning when I drank orange juice I had this heart burny type feeling and had painful burps that felt and tasted like burnt plastic, but this was only one morning. Can all of my pain be due to heart burn or an ulcer? Any with any ideas of similar experiences?