Sometimes people experience hypoglycemia before the pendulum swings the other way and the blood sugars start to run higher and higher until full-blown diabetes develops. I was always on the low side when tested- so much so- that my doctor (of 20+years) stopped testing me for it. I am a large woman but my blood pressure is low normal, and my lipid profile is excellent (red flags for the MD) so he figured I was fine in the sugar department too.
By the time my new doctor (we moved to a new state) caught it-my BG was over 400! I never had even 1 of those classic symptoms and went in to the MD for a UTI- so you'd be wise to have yourself checked out and insist on continuing monitoring esp since your mom has it.
I just want to live happily ever after-every now and then. Jimmy Buffett