Blister in the Bottom of the Eye --Help Me Please

Hi All,

I have a protrusion came out near the eye and nose corner in the eye brow end and make my and near by areas swelling. Dr told me that it is some sort of infection and gave antibiotics(ointment). I applied for a week and went off. This has happened a week before. Now another one came out this time at the bottom of the same eye and little prorusion is coming out. Makes swelling around the bttom of the eye and 3 days passed and no improvement .

I am not sure what is is . How can I go about treating this since any medicine I apply gets inot eye through the eye lid.

I had my saliva gland removed 2 years beofre on the same side of the face. Is this any reason?

I am totally cofused and any advice or natural remedy would be helpful

Thanks
Ram