I’m scared

last week I went to the doctors because I felt a phew bumps in my cheek and I went to get them examined and it was nothing, he said it must be stress and that if anything gets worse to come back in 3 weeks. I think it’s been about a month and whenever I feel my throat there is something just not right. A hard lump that I can feel on my throat just below my chin but in the middle of the throat  but it’s under the skin. It wasn’t there before. For the first time today it started hurting it hurts. Sometimes I ge thriving in the throat now. He pain is on the left side. Tomorrow is my doctors appointment wish me luck I’m 15. Maybe it’s anxiety but hopefully it’s nothing extreme . I feel highly selfish for being so dumb and posting on here because it could be something else but I’m a very anxious person ️