so does this mean I'm fully developed?

I went up a size in pants no big deal right? From size 7 to a 9. Well I did the same in a shirt size. From medium to a large. At first I thought “oh crap have I got to a unhealthy weight?” because you know I can become self-conscious at times like right now… No it turns out that my bust size has grew I thought I’d stay at a 34B but then I remember how my chest feels suffocated some times. Oh well I guess I never expected to grow any more than I had. I’m 5’8” and hearing that I’m still developing at my age is a little frightening at first.