Since last 3-4 days i have a feeling of something getting stuck in the throat beside/behind my uvula while swallowing water/saliva. Yesterday when i was sleeping, faced towards right side probably the uvula touched that place and then i felt the same discomfort(as if something was stuck). I took an image and marked that area, i saw a pimple like lump there. Please help me what is this, m scared. I have a little problem for acidity as well, and m having cough with mucus mostly since 1-2 days. As of now I'm doing warm saline water gurgling.