Low sugar? Have you had enough to eat and drink today?
If you are really worried I think you should call a dr. Does your GP do Sunday's?? I only recently found out that I can call my GP on a Sunday between 10 and 1 I think, so maybe try that first.

Unfortunately if its anything pregnancy related, I dont know if you will have any luck getting into see anyone. I know when I started bleeding at 11w noone cared - not the hossy, the birthing suite or my GP. They just aren't interested until you get over 12-13w I'm afraid.

But it seems more likely to be not related to bubs, which is good . Definitly have something to eat and drink, and then if that doesn't do anything call for some help.
Hope you are OK.