Im 16 133lbs and a 34D I wear a size 5 to 9 in jeans am I over weight?

How tall are you? The taller the person, the heavier.
Go on a BMI calculator (Google it) to find out your BMI and use the chart to see if you are overweight, underweight, or perfect size.
Free chart for you:
Underweight = <18.5
Normal weight = 18.5–24.9
Overweight = 25–29.9
Obesity = BMI of 30 or greater

Be sure to find your BMI, or the chart is useless...