Doc said cud b ibs, ibd, crohns, ulc or hernia from stomach pain n bulges no food triggers heat makes worse gi soon scared something serioues shud i b?

Yes: You have unintended weight loss and abdominal pain. You're going to get endoscoped and end up with a diagnosis that may be anything from serious disease like crohn's to a no-pathology problem / "nerves". Approach this as you would any other workup, realizing the seriousness and ready to comply, educate yourself, and seek consultation as needed.

All treatable: None of those diagnoses are catastrophic diagnoses and can either be "cured" or managed with medication. I can't tell you not to worry, but since you have made a GI appt, you are doing the right thing.