Since about a week ago I started having this feeling of something stuck at the back of the throat (right side), upon closer inspection I found there's a few lumps at the right side of the tongue (a bit further down towards the throat), that area is red with purple dots around. And in between the lumps there seem to be an ulcer-like hole (see pic attached below).

I've been swishing with colloidal silver but didn't see any improvements in the past 7 days, but it's not getting worse either. It's exactly the same as 7 days ago. It isn't painful at all, but just keeps feeling like something stuck at back of throat which I suspect is due to the lumps touching the back of throat.

I've never had anything like this before, and I'm so worried if this might be a symptom of oral cancer. I'm 26 year old female, doesn't smoke or drink, no family history of cancer of any sort.

Anyone have any ideas on what it can be?