I've gained about 1.5 stones in 5 and a half months and I'm slightly worried.
I'm 13 years old and my parents say that it's puberty? Does anybody have anything else to comment?

By the way, I'm quite skinny, and at 12 years old I was 6.5 stones and now I'm nearly 8.

At 13, this sounds perfectly normal.

At 13, this sounds perfectly normal.
Is it? Thanks for telling me, you put my mind at rest! Sometimes it's hard to know what's 'normal'