I’m sorry to hear about your troubles, I am having similar complications except I had two white ulcers/dots on my inner lip along with a mild sore throat. Mine has not lasted as long as yours (started 5 days ago and seems to be getting better) but it could head in that direction. I had a dermatologist of many years look at the sores/dots and he said they resembled the coxsackie virus. Dots at the back of the throat are much more characteristic of coxsackie than where they are in my mouth but the virus symptoms usually does not last anywhere near as long as yours has (unless you have an immunodeficiency). I would see a general physician or std specialist about this seeing as it’s gone on for so long. Hope this helps and best of luck.