Need that scale to move down!

I'm at my heaviest at 271lbs, 5'3. I cannot, I refuse to live like this anymore. I have started Zumba at my job and obtained a membership at a women's only gym. I need motivation. I need someone with a simuliar story. I really need a "fitness pal" that will produce results with me. I have a daughter that's 5 and she desires a sibling, the only way that will happen is if I get down 35lbs. I need to lose at least a 100lbs. I'm hoping to meet this goal in a 1 1/2 or less. I believe I can do it