anxious 18 year old worried about old scar on lip line

I had a singular bump on my lip line 3 years ago and it never showed up before nor again but it did leave a scar. I had thought it was a pimple but I saw a video talking about cold sores and how common they are and i can’t stop thinking of it especially with the scar. At first I paid no mind to it but now its all i see on my face and i have been really anxious about whether it was a pimple or not for the past week. I don’t remember it having the symptoms of a cold sore like the itching feeling before it starts, hurting while present, or being a cluster of blisters, and that was the first time this has happened and people normally say that the first cold sore outbreak is severe. i was wondering if you could tell if it was a pimple or a cold sore by the scar. i know it been 3 years but can i get rid of scar.