Wouldn't it be wisdom teeth? But wisdom teeth tend to be older when they are older, twenty or forty or fifty. I have several classmates in the university long, because in the mouth of the last side, more pain, can be pulled out, also can be no matter, the time to eat a point of anti-inflammatory medicine when the pain. I was stronger and I didn't take any medicine for several times.
You're only 13 years old, maybe it's your teeth, but it's still a bit like wisdom teeth. I don't think it should be a big problem. If not, it's better to ask the doctor.
