The ENT will look into your oral cavity, tongue, throat, and try to feel the base of tongue with fingers for lumps, check your neck nodes for enlargement and do a largynoscope through the nostrils, and may do a biopsy..punch, brush, or excisional, if it's suspicious, and if accessible, but the back of throat, oropharynx, can be difficult to get to, and further back needs to be done under anesthesia, due to the gag reflex. It would take a few days to get the results back, which is done by a pathologist. We really have 3 sets (6) of tonsils, and had mine, probably the palatine or lingual tonsils, removed as a child, so that doesn't mean much as far as cancer or anything else. HPV has propensity to be found in the tonsil, base of tongue more than any other area, maybe by 90 percent, and is often painless until the late stages, and beng HPV cervical increase the risk as do other factors, smoking, drinking...There are many other reasons for lesions that are not always cancerous. The dr. may give a script for antibiotics, and or order a CT or other scan, and depending on that further testing such as a fine needle biopsy for nodes, an endoscopy under anesthesia.

You are doing the right thing by going to an ENT to be examned. Good luck with everything.