Can you tell me if a canker sore forming in my mouth, on the upper part of my right cheek and little red dots in your mouth, what to do?

Is it a canker sore?: Get examined please. Canker sores are common aphthous ulcers of mouth that occur situationally, often in response to stressors, are bacterial or viral, ; can be treated topically with many otc products that reduce local discomfort ; potentially speed healing. However, oral/dental problems ; a number of systemic diseases cause canker sore-like lesions--crohn's, behcet's, std (sexually transmitted).