What could cause inflammation at the base of my tongue?

I had some type of a virus around Christmas time & noticed I had some type of 'flap' in my throat where my left tonsil used to be. I've been having issues since then, sometimes pain & sometimes a weird feeling in my throat. I had a CAT scan with contrast done earlier today & it showed that I have stones in my salivary ducts & I have inflammation at the base of my tongue. The doctor in the ER said he wasn't sure what it was, but my white blood cell count was high as well. Everything I read is saying cancer. I'm 27 year old, female, non smoker, no alcohol, no drugs. He prescribed an antibiotic & told me to follow up with my PCP on Monday & my ENT ASAP. What could cause this? The doctor never mentioned cancer, it was all Google, by the way. I have bad anxiety & the thought of cancer is enough to send me into a horrible panic attack. 😔