I am currently 15 years old, 2 months till 16. I was very late with my puberty. I started noticing arm hair, pubic hair and I started growing. As I am in 10th grade now, other boys start to talk about penis sizes. Compared to mine they are all very big (at least the sizes that I hear from them). I am currently growing a lot, and I had a health check at school lately, that showed that I grew 12 centimeters in a year. However, I haven't been noticing many changes in my penis/scrotum size. I do not have an adams apple, not any visible leg hair (I mean I do have leg hair, but it isn't very noticeable), my voice hasn't changed I believe. I do have hair in my pubic region (not extremely much but it is visible). I have arm pit hair and I am starting to get pimples. I this point I do not really have a clue at what "stage" of puberty I am and if it is going to end soon. Oh and btw, I shave my mustache (like once a month), not my beard. I am just worried about the size of my penis because I seem to have the smallest one compared to all of my friends. Also, I started ejaculating sperm about 7 months ago.
Currently my penis size is 4.7 inches long, and girth is 3.5 inches. I am not necessarily worried about the length, but also the girth...
Question: Is my penis going to get much bigger? I hit puberty about 6 months ago and I haven't noticed many differences.