Over weight and ttc

Has anyone successfully conceived being over weight? Me and my husband have been ttc for almost 3 years and we were both over weight. He's lost 100 lbs and i've lost 30 lbs but i'm still over weight. I was just wondering if weight has anything to do with us not conceiving. I was also on the depo shot before we started ttc and my dr said it could take up to 1 year to get out of my system, not sure if it's still affecting me? Any advice would be helpful!