one week today - disappointed!!

i have entered my height and weight on there with little exercise and it gives me a TDEE of 2068 - i'm confused!!

TDEE = Total Daily Energy Expenditure - the amount of calories you should eat if you want to maintain your current weight. You need to eat less than that to lose - 500 less to lose approx. 1lb/week, 750 less to lose approx. 1.5 lb/week. When you only have 30 to lose the best recommendation is to set your sights on 1lb a week or less, this is the most sustainable and sets you up for the lowest risk of disappointment. 2lb a week when you've only got 30 to lose is not very practical or feasible. So if I were in your shoes I'd be setting my calorie goal somewhere between 1318 and 1568 a day. Closer to 1568.

Also - this is important - with TDEE method you DO NOT eat back your exercise calories.

yep - the rocket may help .....

i also have a condition called diabetes insipidus where my body does not retain water (caused by a pituitary tumor) so i have to take medication for this. it difficult for me to get dehydration - hydration - waterlogged balance at all times and i suppose weighing myself in a morning is not a great idea as i have to take more medication before bed to prevent myself having to get up to use the bathroom every 10 minutes. my rings are always tight when i wake so i suppose i retain water easily.

i'll take some measurements too so i can compare those.

(i'm 5' 8 btw)

Water fluctuations can really throw you off. My weight last week on my official weigh in day was 123.2. Last night I had Chinese food, and this morning the scale says 125.8. Did I gain 2 1/2 lbs of fat? No. It's just water retention and possibly food still in my digestive track. Weight can fluctuate +/- 5 lbs.

can water fluctuate by that much weight?!! no wonder i feel huge some mornings and much trimmer later in the day.

I can retain up to 2kg (4.5lbs) in a day, just from having a salty day the day before. I've learnt to pick the symptoms, though and can tell I'm retaining so I don't freak out.

Portion size was a really big thing for me. What I though was a portion compared to what an actual portion is, was vastly different. I was basically eating double what I should. Plus 1200 is a bit low and hard to stick to. Don't go overboard, your body will react and go into starve mode. Plus If you are eating very restricted calories you absolutely must eat good calories. Really lay off all things sugary and things like white bread, rice, pasta, these things have no nutritional value, spike your blood sugar and you get hungry much more quickly. Eat a good breakfast, protein, like eggs keep you fuller longer. And heaps of veggies for dinner, not too much sauce. I used to think my diet was a bit bland but now I have cut out all the crap I used to eat, my "real" food, is actually really tasty.