I have been waking up with a painful empty stomach the past month or so, some days worse than others. I also have been throwing up my breakfast or lunch due to not being hungry and feeling nauseous, but this occurs maybe 25-35% of the days. I feel that it might be stress-related, but I also think my brain is freaking myself out and that it could actually be a physical problem. It's weird how I have no appetite in the morning and vomit if I eat, but later in the day and night I'm typically fine. Could this be an anxiety/stress related problem or physical? If physical, what could it be?