A woman's weight can affect her fertility. We know that at both extremes, very thin and obese, there can be disruption of the normal process of regular ovulation, and anovulation can often result.
Body mass index, or BMI, is an index that gives us an indication of whether a person is of normal weight, overweight or obese. The BMI factors-in a person's weight as well as their height to give an overall "index". A high BMI indicates obesity.
Go to the WebMD site and use their "BMI Calculator" to find out your BMI and learn more about weight issues : www.webmd.com/diet/calc-bmi-plus