I have lost over 5 stone since last August, the first month I lost over a stone and people remarked that I was losing it to quickly, but it soon levels out, after a while i was averaging between 2-4lb a week, Like you I was exercising as well which I think is the key to successful weight loss.
My goal was 13st And I am currently 13.11St, the hardest part has been the last stone, but I don't weigh myself as much now and as im doing a lot more excersise so my muscle tone has built up. I'm in no rush to reach my goal anymore as i am happy with how i am now, just want to tone up my wobbly tummy and lose some off my love handles!
i have done diets before and have rewarded myself for doing good with a treat and found myself going back into my old ways and putting weight back on! This time I have decided to make some lifestyle changes instead of dieting and this is how i will have to live from now on, One of the things i did was to buy smaller dinner plates!, and lots of freezer containers (when a cooking sauce says serves 4 i make the same ammount but freeze half instead of eating it between the two of us!!) and no second helpings! No picking at the leftover food from my childrens plates either!
But the biggest thing is exercise, I now go to the gym and go swimming at least four times a week.
down side is its cost me a fortune in new clothes (none of my suits fits me anymore) gone from a 42in waist to 34 :0)
Keep going and well done you.