Lovemychocolate - you've lost 2lbs so far, which is great! And so you're thinking of giving up? After only a week?! I think you need a bit more of a realistic perspective.
Low carbing isn't a faddy diet that will see you drop a stone in a day (or other such rubbish
! You need to work at it, like you do any other diet. The difference between low carbing and low fat/low calorie eating is that you will enjoy much better, more satisfying food eating this way.
To take some specifics of your post:
2 eggs with Mayo for breakfast and 3 slices streaky bacon
As long as your mayo was low in carbs and full fat (did you check?) this is a perfect low carb breakfast
1 babybel and earl grey tea with no milk
Again, perfect!
Half a tin corned beef, 60g mozzarella and some leeks fried in butter
Great - hopefully it was full fat corned beef? Although I have found it hard to buy any recently that's not 'light' or low fat. Just bear in mind that mozzarella does have a carb content. At 1.3g per 1g it's very low, so obviously you won't have eaten many carbs here, but just worth remembering, as it all adds up.
1 salmon fillet wrapped in Parma ham and spinach cooked in butter
Great - hopefully you had plenty of fat with this though - i.e. it wasn't just the spinach cooked in butter? Also a really good meal to have in the early days, as the magnesium and potassium in the salmon and spinach will help keep your electrolyte levels up/balanced.
And I drunk 2.5 litres of water.
You should be drinking more than this. If you weigh 200lbs you should be drinking 3.5 litres.
When I weighed on Thursday I had lost 5lbs but today I am only down 2lb from original and feel bloated
If you're feeling bloated, this is a sign that you need to drink more - your body is retaining water, which probably accounts for the difference between your Thursday weight and the latest weight.
I am 200lbs so thought I would lose more initial especially as had v high carb diet before
Not necessarily! We're all different and the results vary enormously from person to person. You may find that next week, if you keep your diet consistently low in carbs, that you see a sudden drop.
But you're doing well so far, and if that day's menu is typical, then you should see the weight come off. Just remember the two key things - drink plenty of water and make sure you really are keeping your fat up.
Good luck!