Couldn't read this and not post. Firstly, I'll admit I'm not overweight but I am certainly not here to judge just to offer some hopefully helpful support and like most women post pregnancy I wanted to lose the pounds I gained and if it helps anyone here's some of the ways I did it.
Firstly, I worked out my BMR (basal metabolic rate) this is the calories your body needs per day just to 'be' as it were. Once you know how much energy your body needs you can really see how to create a deficit to help you lose the pounds, it's just maths really.
Here's a link to help you see: www.bmi-calculator.net/bmr-calculator/
For example once my level of activity is taken into account I need about 1700 calories. So when I wanted to lose weight I changed some of what I ate and upped my activity level. Even if you can drop 200 calories a day it is a start and it WILL make a difference.
Also, I know people do lose weight doing weight watchers but I would plead for you to not go this route, every item should be labelled low fat HIGH SUGAR. And there is no such thing as free food, even healthy foods all count towards what your body needs every day.
One of the best food changes I made was to try and have raw food with every meal. So I chuck some spinach in my lunchtime soup and have cucumber/salads with every dinner. Also, don't be afraid of fat ladies, your body needs good fats and according to Weight Watchers avocados are ruining your waist lines - RUBBISH.
Sorry this turned into a mammoth post and hope it doesn't sound lecture-y, just know this stuff helped me. Best of luck to you all TTC ( I am too!).