Hi Suechin,
I agree with Rachel- one reading alone isn't enough to give you any idea of how your diabetes is going Is the reading before any food?
The information in the links posted by Rachel is very useful. You may want to read around. The advice can be very different depending on what type your diabetes is so some more information would be useful.
No matter what type it is though you are very welcome here and there is a lot of information on this site that will help you.
Welcome.