i'm 15 i'm 4 an 3/4 inches an my girth is 4 1/3

is that bad lady's? i've been with one chick every time an it was both our firsts...but i'mseeing this chick now that's had sex with a 17 year old...do i have any thing to worry about? will i not make it as good as the last one cause i'm sure i'm smaller?