sorry my reply is a little late - I've been taking a little break from the forum! You're 17yo and have a bub, plus an unhelpful hubby and a whole new raft of skills to learn. It' ok to feel like you don't know where to start, that's normal, but please, just start anywhere!
If he's not ready to make changes, so be it. But YOU can make changes. There is a recipe section on here to give you some cooking ideas, just start simple and work up from there! perhaps try making healthy versions of the things you have from takeaway. Maybe grill some ghicken breast sprinkled with some spices and pop it in a wholemeal bun with some salads and a low fat dressing (omit the dressing if you want to keep it even lower!). Same can be done for pizza on say a wholemeal pita bread with lots of vege toppings, some light meat option and a little cheese. This isn't too scary a change for him (or you) and will start broadening your horizons.
Perhaps make time to do some exercise every day - even just 30 min of walking. That's what I started with and how I lost my first kg's. If he doesn't want to come, that's fine, do it anyway, maybe take bubs in the pram for some fresh air if possible. Maybe start drinking more water.
It's these small changes that make the difference - just make one small change at a time until you get used to it and before you know it your weight will start to drop.
Your relationship is your own, however I hope you feel comfortable. If you feel controlled and uncomfortable, please ask for help.
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"