@burhhhh
I can’t tell you for sure that you are in early puberty, but you are definitely not finished.
By examining you, a doctor can tell what stage you are in/ there are 5 stages- called Tanner stages. Tanner 1 prepubescent and Tanner 5 adult.
A doctor can also do an X-ray of a wrist to see what your growth plate looks like.
Do you have a doctor you see for physicals etc?