Hi Blink1
I've read your post carefully, and (as I understand it) your reading of 64 equates to approx 3.5mmol/l.
For people who are not on glucose lowering drugs such as insulin, the mid 3s are perfectly normal, so nothing in your post suggests reactive hypoglycaemia to me.
Clearly, with your level of anxiety about RH, you are unlikely to find that particularly reassuring, but in my experience RH is very different from how you describe the 'kind of cloudiness' that triggered your concerns.
It does sound as if your concerns need addressing though, because they are affecting your life.  Please see a medical professional and discuss them fully.  They may conduct further testing or refer you to someone to discuss your emotional state, both of which will hopefully help you to move out of this state of anxiety.
From my perspective (with no medical qualifications) it sounds as if the root cause of your distress is fear and worry, and your concerns about RH are just an expression of a deeper issue.  If you could address that, then you would feel better all round, and RH may cease to worry you.
I hope you are successful in this and urge you to pursue that route rather than focusing on RH.