I dont drink or smoke. I have been a pre-diabetic and have been a covid patient April 2021. Suddenly today a mole/ulcer has come up in my mouth. It doesn't pain on touching. I want to know is it some kind of cancer or ither problem. Should i get any screening for it in my city. My current meds include rosuvastatin 10mg for cholesterol and rivaroxaben 7.5mg for anticoagulation. Ither than this i have added a lof of veg salad in my diet in last few days which contain a lot of potassium content like spinach, carrot, beans, moong daal etc.