I m a 13 year old girl who weighs 118 and I am 5 4. What should my normal glucose level be?

A non-diabetic's fasting (after not eating or drinking overnight) blood glucose level should be between 70 and 99 mg/dL (milligrams per deciLiter) [that's 3.9 and 5.5 mmol/l (millimoles per litre) for those using the International Standard for blood glucose measurement]. (Some laboratories now accept 65 mg/dL [3.6 mmol/l] as being the lower limit.)

Two hours post prandial (after eating) a non-diabetic's blood glucose level would rarely exceed 140 mg/dL [7.8 mmol/l]. I say rarely as there are occasions when it could be higher, such as if the person being tested had one or more comorbid medical condition(s) that are known to cause raised blood glucose levels; if the person being tested was undergoing extreme stress at the time of being tested; or if the person being tested was taking certain types of medication which are known to cause a rise in blood glucose levels. (These medications include those that contain steroids, such as the types used in the treatment of asthma, or for the treatment of certain specific types of infection.)

Below 99.