Miados - did the Asian salad have a sweet sauce? I've been tricked with salads before. I've also had massive readings after Vietnamese Rice Paper Rolls. Have you been sleeping ok? Are you feeling unwell?
Stress, sickness and sleep deprivation all effect levels
Hope they've evened out this morning for you it can be really upsetting when your trying to do the right thing but can't control it it's not your fault!