Suddenly there is gum in my eyes and my eyes are red.

Hello, it is usually caused by bacterial infection. Bacteria multiply quickly in hot weather, and careless hygiene can also cause it.

Do not rub your eyes with your hands. Clean and disinfect the towels you use. Drink more water and eat less spicy food. You can use levofloxacin eye drops. The above is the suggestion about the problem of sudden gum in the eyes and redness in the eyes. I hope it helps you, and I wish you health!