any overweight mommies out there!

I really need your guys advice! I'm 5'5 and weigh around 240. I've gained about 30 pounds in my three years of marriage.. so I'm struggling with my self-confidence.. I've lost 15 pounds so far. My husband and I want a baby in the worst way! I go back and forth about it, like I want to become a mom.. but I worry about my weight.. I don't want to gain a ton of weight.. and not enjoy/feel comfortable. And have health complications because of my weight! Can anyone shed some light? Has anyone been in the same situation?