
My freind has just had her first at 36 1/2 years of age :D
Your metabolism does become more efficient during preganncy and after. It is why men can eat more to maintain the same weight.
Unless you have a metabolic disorder it really does boil down to fuel in versus energy out.
You can only loose weight if you take in less fuel than your body needs.
What kind of food do you eat. Try varying the carbohydrate, meat and fruit and veeg as much as possible.
I am one of those people who love my carbs, and have dome with most meals. I use flour, pasta, rice, bread and breakfast cereals with everything.
I have totally cut out all spreads that go on bread (butter marg) fat for cooking, chocolate, Hard Cheese, Jam, very rareky have red meat. SAid I would never do it, but actually can palate skimmed milk, and use a lot of herbal tea.
I have increased my itake of vegetables hugely. I do not peel most veg, and have my potatoes with the skins on, boiled or baked.
Strangely enough you need to drink lots of water, dehydration actually inhibits weight loss.