Time to get real

Options
Hi all, I'm a 40 year old teacher and I'm not happy with my weight. I've not been happy with my weight for a long time but I really struggle to motivate myself to do anything about it.
I have a beautiful 6 year old son and would love to have another baby but I know that I need to loose weight to have a healthy pregnancy. I'm 5' 1" and nearly 14 stone!
I've decided to start calorie tracking so that I can be in a calorie deficit.
I've got 5 more weeks off school and really want to go back a lot lighter. I haven't got the excuse of not having time to work out at the moment.
I'm hoping that I can stick with it this time. My will power is non existent when I'm offered a takeout over cooking but I need to remember my why. I want to be fit at forty, not fat at forty.