worse case scenarios

Good day! Just yesterday, I found something irritating on the back of my lower left gum. A reddish skin from my gum was somewhat peeled off and is painful and bothersome and I have no idea what it is. Google told me all the worse case scenarios related to mouth diseases from ulcers to cancers...

I’m completely in love with this guy ### but I’m scared people will ruin it for me like I’m thinking all the worse case scenarios like people always get secretly jealous when you’re loving yourself and happy like I just want a piece of happiness in life.