Re: acupuncture, you might try wearing “sea bands,” inexpensive little wristbands meant for pregnant women with morning sickness. They are designed to stimulate an acupressure point that helps with both stomach ache and anxiety/stress. These points really work — my wife used to have really bad morning sickness, and it would often go way after I would press a few spots!
I would be careful about the coffee, since it had acids in it that bother a lot of people (not necessarily right after you drink it). It might also interfere with your sleep, making it hard to get up in the morning.
If I were you, I would make sure to eat at least a little yogurt each day; it has probiotic components that can fight bacteria that cause or encourage gastritis. Hatzlacha!