Week 9/10 Part 1/3

Ok so this week I have been a bit confused, I weighed myself mid week and it seemed like things had gone so well, I had lost a stone in fact more overall. But I then deleted some older weigh ins from myfitnesspal from before I started this program, that caused a "gain" of 0.5kg in my total and then when I came to weigh myself at the end of the week I was heavier than mid week. Why did I weigh myself mid week? Regardless I did not over eat and got plenty of exercise so it can't be all bad, stay tuned for more wise words on weighing...