Welcome to the forum. Im fairly new here myself, but I have found it has helped me out alot.
Im in a very similar boat to yourself, 23yro, 2young children, not married yet thought. I use to be fairly small, until the birth of my first child and my weight has been all over the place since then. So if you ever need anyone to chat to let me know, Im always up for a chat
Good luck on your weightloss