Nope. It isn't as easy as it used to be. When I was a teenager, I could lose 4 pounds a week easily when I was on WW. I couldn't do that now, can't even do 1/2 of that now.
Our metabolisms slow as we age.
But don't wallow in self-pity. There's really no need for it. I used to believe that my PCOS stopped me from losing weight- and in its own way, yes it did, but only because I used it as an excuse to not eat properly. Once I realised that I needed to eat healthier and look at the number of calories I was eating a day, the weight started coming off. The PCOS was merely an excuse. I wasn't in the right place mentally to do it. Now that I am in the right place, the excuses have stopped; if I don't eat right, it's my fault, not DH's, not the PCOS, not TOM and not my age/metabolism... mine and mine alone.
Eat right, look at what you're eating and exercise; it'll come off. Maybe slower than you anticipated, but it will come off. As someone said in another thread- if you're not moving forwards, you're going backwards. Do you really want to be going backwards? Every pound lost is a pound you don't have to worry about anymore, it's a pound closer to the goal. It all adds up.
Now get off your butt and go exercise.
(is that okay for a butt kicking?)