Hi Diane,
That must have been horrible for you - I hope you're feeling better now.
I have real concerns about night time hypos as I seemingly randomly get night time hypos, fasting lows or fasting highs with no real pattern. I have discussed this at length with my consultant and he has reassured me that I will always wake from a hypo - my body will correct a too low BG - he has also put this in writing to my GP and copied me into the letter. That has reassured me somewhat, but not completely. Anyway, your consultant can get you a Continuous Glucose Monitor (CGM) on loan for a week so that they can analyse what your BG is doing overnight. In my area, you have to attend a DAFNE course before they will consider this (because they always start from the assumption that you are stupid and are making dosing mistakes -Grrr...). I attended the wretched course and still have the same overnight issues and am still arguing for the loan of the CGM. Maybe it's worth discussing such a loan with your consultant in light of what has happened? There is a thread on here by DunePlodder with a group of members who are self-funding their own CGMs - it is really expensive, but maybe you could look into that? They alarm if you go too low at night and let you have visibility of your BG patterns through the day and night. I am seriously considering this myself.
Anyway, a conversation with your consultant should be your priority. Obviously, this will count against you with the DVLA if you drive, although you won't lose your license unless you have another episode like this.
Smidge