plus size

I probably haven't said anything about it on here but I'm a plus size girl who is trying to have a baby. its very hard. I have had a weight problems scent I was about 12. its really hard for me to lose more then 20 pounds. my doctor says I need to lose about 40 before I'm at a good weight or even before my body will even let me get pregnant. its really heart breaking knowing its all because of my weight that I most likely will not become a mom.. we don't have the money for doctors or adoption. All I have ever wanted scent I was a little girl is to be a mom and have a big family. my fiance wants 6 kids and it hurts knowing that I probably can't give them to him..