Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that
white spots on roof of mouth and back of throat along with difficulty in swallowing and swollen
uvula seems to be most probably due to
throat infection that seems to be bacterial as pus pockets that can be those white spots seems to be most probably during bacterial infection..
It seems more to be throat infection and less probable chances that it can be cancer so do not worry about it..
I would suggest you to consult an Otolaryngologist and get evaluated and a throat swab culture can help in diagnosis and treatment can be done accordingly..
In case if it is due to infection then you can be advised a course of antibiotics and anti inflammatory painkiller like
Ibuprofen can help..
You can gargle with warm saline solution..
You can chew a
Vitamin C pellet daily..
Suck throat lozenges
You can avoid spicy and hard foods and take a soft bland diet with plenty of fluids..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.