You might just want to get a new limb and save your money for a new bow til later. I went through a large growth spurt at about 15 and as a result also found that I was also a lot stronger (high School weights and stuff during P.E.). So, You might want to wait a couple of years, really research and try quite a few different bows and then get one that can easily carry you into your early 20s.

MJW