Parsnip when EDD is calculated from LMP they assume ovulation on D14, so you just add a day onto your EDD and take one away from your 5+3, so you are 5+2.
"Sick bags at the ready"...this post was aptly named. I agree, it hits at different times of day (& night!) and is different on different days. Eating def helps, problem is, if I snack too much I can't manage a whole meal, plus I think my stomach is smaller somehow.
I too went to the supermarket yesterday and bought up all the things I had a craving for, problem is, today I can't face them! Ha ha.
NB seeing the word frankfurter so many times on one page is making my stomach turn
I may have to found the AntiFrankfurter League 