Iam overweight and my baby is really big! Help?

My 7 month old weighs about 11kgs and iam overweight and have always been since puberty which was at 12 now iam 20 iam worried that my daughter will become fat when she grows up! my husband is normal not fat but he says that our daughter will become obese and never get married cause this society only cares about thin people and i agree what do i do? She is formula fed and we dont over feed her just the normal 4 feedings a day and one bowl of veges I feel like she may of inherited my fat genes =( should i put her on a diet?