What is wrong with my guts?

For nearly a week and a half I’ve had a rumbling in my lower abdomen. I am not experiencing any sort of pain or discomfort. I suspect a few different meals that might have caused this… a fried dish on a nearly empty stomach in an already anxious state, left over pizza with an anchovie on top, and Almond-milk ice cream, all eaten within 12 hours of each other.

But regardless of what caused this, it has not responded to a few days of Pepcid AC, or Pepto Bismol tabs, or Alka Seltzer. Today I am fasting to see what happens, and so far it is working. There is still some small disturbance but it is not nearly as pronounced as it has been.

I am starting school soon, and imagine that there could be an element of anxiety here.

My blood pressure, and other vitals are all perfectly normal, and I feel happy, and fit.

Should I be overly concerned? When should I make an appt. with a doctor? Should I try a Prilosec OTC regimen for a couple weeks and see how that goes?