Wanting to try for a baby

Hello! I am a 21 year old married women. I am plus sized, and have been over weight majority of my life, and it is very difficult for me to lose weight.

My husband and I want to start trying for a baby. I've talked to my gynecologist about it, and she wants me to lose some weight first (I am currently 250 lbs)

I currently am recovering from a cryotherapy treatment on my cervix from abnormal cells, but have a follow up pap smear in March. I plan on telling her again that my husband and I want to have a baby, and want to come off birth control.

Anyone have any suggestions on what to say/questions to ask? I am 100% willing to change things in order to make sure I have as safe and healthy pregnancy as possible.