Weight is certainly not the only measurement of health. You don't measure out as obese. Do you smoke, have allergies, diabetes, heart problems, migraines, malaria, club foot, or dysentery? If no, then you may well be pretty healthy. I hope so.
How about you calculate you BMI (Body Mass Index) You put on your height and weight and they calculate it free online, just Google it. Because I'm 138 pounds and only 14! And I thought I was overweight, but I just tall, 5'11 almost 6ft, so yeah.