Am I to big

Is 280 to heavy to have a baby? We’ve been trying 8 months and I’m starting to feel defeated😐 most of my weight is in my mid section but I have such a hard time losing weight🤦🏻‍♀️ I have regular periods but nada! My husband says we just need to have sex more but I thought we BD a lot in April I just feel like I’m doing something wrong..