Weight..?

how heavy should a 5,1 teenager be? i’m a teenage female and ive struggled with my weight for my whole life (eating disorders,not knowing how to eat properly or be consistent with a diet etc) , ever since i was a kid i was always a bit chubby. shortness runs in my family so according to my doctors im not growing past 5,1. currently i’m at 159 the skinniest i’ve been at this height and age is 140 (i did a portion semi pescatarian diet and worked out consistently due to my sport) am i over weight? i am a pre diabetic so i try to be careful with what i eat and im and athlete but it is off season so ive stopped working out as much and gained a few pounds, when i was going through a lot i used to weight 180 but ive gotten it down to 150-160.