Well, you might have gone a bit mad on the beef, but, if you go bcak to old fashioned counting calories,in total, your daily calorific intake is not that bad.
Eggs: 2x 90= 180 calories
Prawns : 220 calories
Crabsticks 25 calories x8 = 200 Calories
Beef: about 800 calories
Yoghurt About 60 Calories
1460 calories per day
Its recommended that the average female needs about 1950 calories per day.
If you go by Dr Dukane, as most of those calories are protein, you will only use a certain percentage of the total protein calories ingested. (Cant remember the exact figures, and I've put the book down somewhere.)
Anyway, the point is, you should be eating until you are not hungry any more, and not worry too much about amount.
I suspect though, that you probably havent drunk enough fluids, hence eating a v large portion of beef.
Dont worry about it.
See how you go tomorrow.