My glucose spikes and drops very fast when i do a minimun activity such as stand on my feet or walk few steps to bathroom making me very dizzy. strips are accurate. i'm not diabetic and this is a problem for me to function, what can be causing this?

You should keep track of what your blood sugars are when you are experiencing these symptoms. You can get a glucometer for this purpose. Then, you should see an endocrinologist and review your blood sugar numbers. You will likely need additional testing to determine what the etiology of your low blood sugar numbers are, depending on how low your sugars go. Eating frequent small meals can also help