Just had a weird low. 5.8 at lunch (fab) - usual lunch & 4 units Novo. 6.8 at 4.00pm but feeling rubbish so had biscuit despite reading. 4.30 ish still feeling rubbish so took BG again... 3.8! Dextrose x3. At least explained how was feeling. Only thing I can think of is weekend was quite an active one but didn't expect delay between BG result & my 'gut' feeling. Argh!