500 met is a starting point everybody needs a different treatment plan.
could be reactive hypoglycemia caused the low reading.
I am on 500 mg twice a day and my a1c has never been above 7.
if your Hba1c was really 15, this means that your average blood sugar is nearly 500. This is an extremely dangerous level. Consider than normal hba1c is 5.7 can already get you diagnosed as diabetic).
Hba1c is average blood sugar level over the past 3 months.
On the spot glucose test only tells your sugar level at that particularly time.
If your Hba1c was really 15, most likely you should be put on insulin at least until things are normal.
Very low vitamin D is common in autoimmune conditions.
Do you have a home blood sugar meter? Please get one if you don't and use it.
Target blood sugar levels for fasting are typically < 95, and target post eating should be < 140.
If your home meter shows that your numbers are very high (say greater than 180, but particularly if they are 250+ or higher, you should go to your nearest emergency room). Such high levels put you at risk for stroke and heart attach.
I believe that you should be tested for type 1 diabetes. This is done by testing for antibodies, testing insulin levels, and testing a substance called c-peptide. If you have type 1 instead of type 2, then you need to be on insulin.
If you are feeling bad (vomiting, nausea, headache, chills) then you also need to go the nearest emergency room as soon as possible. This is something called diabetic ketoacidosis. It can be fatal if not caught and treated early.
Please immediately adopt low carb eating. You may look up "banting", which is very effective for helping to manage blood sugars.
please come back and let us know how you are going. Also please confirm your Hba1c level.
So sorry to hear about your diagnosis. Here's some basic information on navigating diabetes and making sure you're staying healthy from MedHelp.org and the Sugar Sense app. Please come back and let us know how you're doing!