Thank you so much for all of the supportive messages.
@redpony1, I do have her number, and will try texting her later this week once I'm feeling like a reasonably human again. I feel for her because it honestly takes an hour to go around to everyone at group, which doesn't leave much time to talk about much else.
@00alwaysbusymum, was actually doing an SP week and was expecting a pretty significant loss, which I think is one of the reasons I have got so upset. I have eaten courgetti and cauliflower rice and extra spinach under everything until it was coming out my ears this week.
@petaldrops, I have the mirena coil and my periods have stopped, so I don't actually know!
I may mark this down in my calendar and see if it happens again in four to five weeks and that may solve the mystery.
@latedecember1963 it is mildly frustrating that she keeps confusing me with the other member (she even chased me down to give me the other member's food diary at the end of class once). We did join the same week and both have dark hair, but she's at least 10 years younger and two stone lighter, so perhaps I should be flattered?
I had baked salmon, courgetti, and broccoli for dinner. Keeping on it and will just look at this as the start of an exciting new week.