Conceiving while chubby.

Erika • Found out I have PCOS and have been on medication for 6 months now with no luck of pregnancy.
I see myself has too chubby to conceive but what about those gals who weigh more than me and have a kid or is pregnant? So I see it as a possanility to get pregnant and be chubby. My doctor and mother say I need to lose weight in order to have babies. Any thoughts? Or opinions?