I am so glad that you sought professional advice from the hospital. You were not being a drama queen at all, you were just very worried as were we
I used to be on Gliclazide and never had a hypo (low blood glucose) but it is possible. Biscuits are unlikely to work quick enough to raise your BG (blood glucose) many here use jelly babies around 3 or 4 of them , personally I don’t as I’d be scoffing them and wouldn’t have any left when needed ,150 ml of juice , the same amount of full sugar can of Coke or 3 or 4 glucose tablets are fast acting .
I trust you will start to feel better soon.
I too am amazed at your Hb1ac , it’s really just over the threshold for diabetes 48 is the tipping point, as has already been said if you have T2 you stand a very good chance of turning this around , if you have T1 it’s being caught early which is wonderful.
Please let us know how you get on.
Ask all the questions you need to about diabetes, we’ll do our best to help.