You're not crazy! Time does march on -but we all know the alternative to getting older, right? I'm 41 today, and OH YES I am noticing special little lines around my eyes -and those suckers really puff up and get baggy in the morning if I've cried the night before or had a little too much wine! That NEVER used to happen. I recently lost 30 lbs that I've been trying to find the motivation to lose since I had #2 in 2008, and it will give you a great lift! However -not having anything under the skin to "plump it up" has certainly made me think my neck is looking old ;-) The fact is you CAN look younger and better and feel like it, too!
I've always had to keep an eye on my weight, so consider yourself lucky to be facing this for the first time. YES -our metabolisms slow and both genders tend to put on some weight as we go through middle age. The older you get, it is much tougher to take it off, but you can do it! Don't do some silly "quick weight loss" plan or the latest weight loss fad though -head to Weight Watchers or read up on good nutrition and portion sizes. The difference between now and your past is that you're going to have to start thinking about what you eat. You may really need to educate yourself on what "healthy eating" really means and what sizes portions actually should be (that can be a little disheartening). Exercise will help you immensely -in more ways than just keeping the weight off too. You will look and feel younger with exercise.Walking, jogging, dance, yoga, swimming -whatever floats your boat and gets your heart rate up will do! I've recently gotten into kettle bell workouts, and I love it. Building lean muscle will make your skin and body look younger and more toned, and it helps your metabolism by burning calories more efficiently. It also REALLY helps as we age against bone loss and breakage and keeps you flexible.
I remember about 4 years ago after having my first child and losing the baby weight -I went shopping and tried on a "cute" outfit. It was the first time I looked in a mirror and with horror realized that I was WAY too old for it! It fit my body, but not my face! However, there are many gorgeous clothes out there that you can wear without looking frumpy or "mommish." Look for clean, simple lines, well-tailored pants and jeans that actually fit well (they don't have to be "mom" jeans -just not super low-riding, thong-showing, ripped and ultra tight ones). Add some punch to your outfits with great jewelry -nice big semi-precious stones, silver, etc. and really good shoes. Don't buy too frilly or flouncy. AND GET A HAIRCUT! Seriously -I don't know how long your hair is, but beyond shoulder length is going to make you look older and more matronly as you age. You don't have to get it all cut off, but keeping it in some soft layers around your face and not heavily styled will really help. I know that can be a really hard one, but take it in baby steps, and you'll probably be really happy with the results.
I sit on the fence when it comes to plastic surgery, botox, juviderm, etc. I'm not terribly comfortable with the idea of botox, but I know several people who love it -and it really does a great job for them. I can see myself trying juviderm in 5 or 6 years (and if the neck totally goes -I am SO having a neck lift -IMO few things are as aging on a woman as a jiggly, wrinkly neck). If you're truly bothered by the aging process, there are options to look into, but I think you can also age gracefully and beautifully without any of it (and it is expensive and carries risk).
So -sorry for the novel-length post! I guess this is just really on my mind after getting ready this morning! As far as members of your family commenting on your weight -where do they get off? There are a few members of my father's family like that. Personally I would counter act the, "You look like you've put on a little weight," comments with, "And you seem to have developed a moustache (for women) -what are you doing about that?" or "Yeah, I'm trying to keep up with you," or "Thanks for your concern -tell me -are you getting enough rest? You look like you've aged 10 years since the last time I saw you..." If you're not the "comeback" type -honestly say to them, "Wow -you really know how to make someone feel good." It's really not okay for people to comment on things like that.