Re: please help- possible polyp or something else?
You have one major advantage being in America, and that is because you have private health insurance. **Generally speaking** in the American health care system, they wouldn't "watch and wait" if they even suspected cancer for a split second. You'd be referred for the appropriate diagnostics right away.
Irrespective of this, your doctors lack of worry is very reassuring. Doctors don't hide it when they have doubt.
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Healthcare Professional with Health Anxiety
Be kind, for everyone you meet is fighting a hard battle