Try to reduce the weight and maintain your BMI in between 19 to 24. Do regular exercise to maintain the weight.
try to avoid worries as they will further increase the hormonal imbalance.
once ovulation occurs plan intercourse during that period which will increase the chances of fertilization.
In dietary modifications,
You should decrease carbohydrate intake, take foods made-up of whole grains like whole wheat bread,
Decrease fat intake and increase protein content.
Take high fiber diet, fruits, vegetables but avoid starchy vegetables like potatoes.
Take plenty of water avoid sugar drinks....Consult nearest physician and gynaecologist they will do the needful