I don't think my body has developed like a normal male

I’m currently eighteen and I’m experiencing a major problem. I don't think my body has developed like a normal male. My upper body hasn’t broadened. It’s still like a 14-15  year old .ii have never seen any grown up with a less broad frame  . I’m still wearing my shirts that wore in 9th grade. My wrists are puny like sticks , my hands haven’t gotten bigger , my penis is pretty darn small (I don’t really care but it might be a symptom of something) I mean l 4-5 centimeters and 7-8 centimeters when erect (typical is 8-11 normal ). My face i think looks youngish but I really can't tell though. my lower body is normal.

Other important information - I have grown to my fathers height. including a growth of 4 inches in both eighth grade and ninth grade. During those 2 years my voice also deepened. However did not gain weight in 9th and 10th grade( I was stuck at around 120-125 pounds).in 9th grade I ate normalish around 2000 calories and in 10th grade I totally didn't eat enough ( under 2000 calories with physical activity) .During these years I was calcium deficient as well since I got a reaction to dairy. Currently I’m almost 5'8 in height and weigh 145 pounds not skinny not fat . in addition if this makes a difference in terms of testosterone and other hormones , yes i can ejaculate, have facial hair and do think about women a lot like many men do

in addition my doctor almost sent me to tests in 9th grade to investigate as to why didn't gain weight. The issue was never pursued from there since I didn’t go to the doctors for a year and a half because my parents forgot about it when they got divorced. This year I addressed the issue of my body not physically developing like a normal male with my doctor in early February and he says that people come in all shapes and sizes.

I hope I’m not overreacting I do not want this to make it extremely more difficult to find a girl, get a job or socialize ect. Are my eating habits to blame? Should I see a new doctor? a specialist? am I overreacting ? is there anything I can do ?, is it too late ?