was my puberty delayed ? is there something wrong with me ?

I dont know what is wrong with my body. I dont know if it is normal or not..... 6 grade i remember having my first period, all my friends had theres too. I was and am skinny ever since i was little, usally weight about 89 lbs maybe less now... i am 18, i dont know what went wrong through my puberty or whatever because now that i am 18 soon to be 19, i look really skinny. No butt, i got small tiny breasts. Skinny arms and legs. And i am 5'0 or 5'1. All the people i was friends with grew normal because they got hips, breats, butt and they look like women. Me on the other hand looks like a 9th grader. Maybe 8th grader.. my body never developed. So it effectet me alot and how i feel and felt about myself. My face is a little bigger not really, then my body. And my face looks 18.. but not my body. And i know i love myself, but i just dont want to be like this.. people joke and it hurts. Im too skinny. :(