I can't seem to get my sugar reading low even when i use my insulin regularly. my readings has been in between 17 and 23. what is it that i maybe doing wrong?

High blood sugar: Either your diet is poor or your insulin dose needs to be adjusted. Persistently high sugar readings like yours leads to serious complications. Your physician should evaluate you and get your diet and/or diabetes under control. If this can't be accomplished I recommend going to a diabetologist, endocrinologist or diabetic clinic.