I would guess that a woman of your height and age should weigh anywhere from 105-125. This is just my educated guess by looking up on the online BMI chart (http://kidshealth.org/teen/food_fitness/dieting/bmi.html) but you should check for yourself, and find out if you are at a healthy weight.
117 - 143 lbs.
Anywhere from 130 to 160 pounds.
About 120 pounds About 120 pounds
Ideally, a female of this height would weigh 95 lbs., but 100-110 lbs could be OK depending on bone structure and body type.
A boy that is 4 foot 9 inch should weigh between 30 to 40 kilograms. This is the ideal weight but it varies in most cases.
100-115
152 pounds
125 lbs
about 75-86 pounds
About 120-133 Pounds
150-165lbs
125 to 140