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.
It totally depends on your height. For example, if you were 5 foot 5 (a reasonably average height), a healthy weight can span from about 8 and a half stone up to 10 stone. People's bodies are different shapes and if you have more muscle then you could be heavier than this and still healthy. Type in your statistics to a BMI calculator and you should get an idea of how healthy your weight is.
The medical recommendation would be 107 - 141 lbs (about 8-10 stone) which would put you in the range of your ideal body mass index.
There are lots of online weight calculators online that can do this, if you search Google for 'Ideal Weight Calculator' for instance.
However these calculators aren't perfect and can't tell you everything, the most accurate way would be to go and ask your doctor.
Depending on your build, I would say around 110pds...
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