Sorry to say, it seems like you're diabetic again. Please monitor your blood sugar levels.
You may also want to try cutting your carbs / adopting a ketogenic diet. You will certainly need to be on medications if your blood sugars continue to be this high, perhaps even insulin.
I am already back on metformin, but does not seem to be doing any good as my numbers have still not gone down and I have changed my diet to a low carb/sugar diet.
Many people have the mistaken notion that doing something to lower their BG is a cure for diabetes. in your case it was losing weight by gastric bypass. gain the weight back and so does diabetes. in essence you controlled your diabetes by controlling your weight.
As you now know for some controlling weight can control diabetes for many control their diabetes by controlling their diet. carbohydrates raise BG ALL carbs raise BG whole wheat will raise your BG.
With BG 300 and 430 you should heed your MD advice and go to the ER. That BG is dangerously high. people can go into diabetic coma.
Got my a1c back today and it was 6.5. Not great, but much lower than I thought it would be. Doctor just wants me to take metformin and report my numbers to her on Friday. This morning my bg was 280, still high but 100 points lower that the day before. I know it takes the meds some time take effect. My body is weird. Even when my a1c was 4.8, my morning bg was 200.
The a1c can be low if the onset of high blood sugars was very recent.
This can happen with type 1 diabetes, which is sometimes a rapid onset.
Was there a recent illness? Sometimes diabetes can be triggered by an illness.