Hi,
Tips for your health
1. Avoid oily, spicy food.
2. Eat plenty of green leafy vegetables.
3. Do at least 30min. of sweat inducing exercise daily (Walking/Running/Skipping/swimming)
Above 3 things will help reduce your weight. Even if your weight is not reduced much, these will help in making periods regular, also help in avoiding diabetes (PCO women are at high risk for diabetes).
Regarding
infertility problem, you are having
irregular periods & mostly not making eggs monthly(
anovulation), for which you can try
ovulation induction with simple tablets in consultation with your doctor if your tubes are OK & husband's
semen analysis is fine.
This advice should help you getting pregnant fast.