Is tongue normal? Or any oral disease?

Saw some redness and swelling at the base of my tongue. It's red and looks swollen.feels itchy and very sore.feels like skin bruised when I run my tongue over that area. Nothing was spotted the day before and this redness appeared on Wednesday morning when I woke up. Saw redness and swelling on Wednesday. I used mouth wash for 4 days prior to that. I took ibuprofen for 2 days and the redness reduced. Still have the mild Swelling. I have burning sensation in tongue and throat. Don't see any visible blister on upper side of tongue. But burn feel and very sore on upper side of the mouth. Eating only cold foods. Tongue underside veins looks little blue greyish. Looks darker than before. Is that normal? I see the mild Swelling under the tongue on the floor of the mouth. Is this normal or any oral disease ? I am worried if this could be something oral cancer or oral disease. Attaching the pics for day 1 with redness and swelling and today's picture(redness reduced). Any inputs. thanks