Ivf BMI=extra money?

Brittany • Married💍 1 amazing little girl 7-9-19🤱🏽

Any help/advice I am 100% new to <a href="https://glowing.com/glow-fertility-program">IVF</a> and my first apt is this Friday aug 3rd... I just got my little welcome packet that kinda gives you a little bit of info on what to expect and pricing and in one part of it, it states that women who are over their BMI could have additional cost added to their treatments and “overweight women tend to have more issues carrying and conceiving” has anyone else ever heard of this?? I am not over my BMI so no worried about this as of now, but even mentioned maintaining a certain weight ratio even while pregnant and cost.... I am so confused as I have never heard this, but like I said haven’t even had my first apt yet, give me your thoughts!!!! Is this true??