For the first time..

For the first time in my life, I'm scared. I have a doctors appointment on Tuesday and whatever this pain is... It seems to be getting worse. It is right under my right breast and I can't for the life of me figure out what it is. It started probably around I want to say Feb. It started once and a while, nothing big, hardly noticed it, unless I bent over once and a while and stood up and got the pain. Then about a month ago I got this constant pain for a full day. I felt like I bruised something. And then the last few days everytime I sneeze or cough. It hurts. I'm scared. I don't know what it is, and I'm frightened. I feel at the moment like I don't know who to talk to about it. I feel as though maybe I am being a baby, but I think it is something I need to tackle. I need to go to the doctor anyhow for a check up. I can't even remember the last time I went. I am just Scared...