Abdominal discomfort and loss of appetite

So I’m feeling pretty terrible. 5days after flying out for work(remotely in Alaska) I start to experience some abdominal discomfort. My appetite goes away and I’m pretty tired. Now I’m 5 days into these symptoms and it feels like a apple stuck to the end of a knife in my belly. I’ve went to the medic here and they gave me antacids(didn’t help) I think by now if it was my appendix or gall bladder it would have escalated by now. Any one experienced this? I haven’t been able to eat much because it makes it worse.