On a VLCD diet most people will lose around 14lb a month. In the first week most lose quite a lot, but it's just water weight (well most of it anyways) but not everyone will have such a great first weeks loss, we're all so different. I personally didn't lose a big amount in my first week either, I lost 4lb. But when I did exante last year (another VLCD) I lost nearly 8lb in my first week. I just restarted Slim and Save and have managed to lose 8.5lb in my first 5 days! that's over double what I lost in my first 7 days on Slim and Save when I started in March... so things can really vary so much.
Did you reduce your carb intake prior to starting? that can make the first weeks loss lower.
I totally understand where you are coming from, trust me I really do! But I'm always able to offer others advice but can never take any of my own lol. I suggest not to get too hung up on the first weeks loss, because over the next 3 weeks and 2 days you will probably make the 14lb lost. I know that the boost on the scales in the first week (even if it is just water weight) makes us feel a lot better, but 14lb a month is what is suggested on this type of diet and you will have lost at least 1/4 of that by your first weeks weigh in.
Even though it's is disheartening, try to keep on going, for at least 4 weeks to see what your losses are