should be healthy with lot of fresh fruits and salads which have antioxidants which can have beneficial effect. If you are not in the correct bmi then you should try aiming to be in the bmi of 25. A ten percent loss of weight (over a couple of months) can be very helpful to achieve pregnancy
. Intercourse can be as frequent as possible. Alternate days or naturally possible intercourse from 10th to 17th day (in case of regular 28 - 30 days cycle) can be done.