Boost your good fats
Trans fat and saturated fats are bad for the body in large quantities and are a big part of many of our diets. Boosting your intake of Omega 3 fatty acids, which you can find in fish like salmon and mackerel, has been found by several different studies to boost fertility and promote ovulation. Omega 3 fatty acids have even been shown to play a role in preventing the fertility complication endometriosis. Good stuff!
The type of exercise you benefit from depends on your situation. Women with PCOS may benefit more from muscle-building strength exercises to improve their insulin tolerance, for instance. If you are not sure about the exercises you should be doing, seek help from medical professionals to address your specific situation, rather than slaving away in the gym five days a week without losing weight.
Eating less may not be the solution for you, particularly if you have PCOS. It is what you eat that matters, but unfortunately opinions are extremely divided as to what makes up a healthy PCOS diet and how one should lose weight. One size doesn't fit all when it comes to good eating and weight loss. If you are unsure what you should be eating, you may require some experimentation as well as a visit to a good nutritionist. Losing five to ten percent of your body weight is often enough to start ovulating and be on the road to becoming pregnant! Don't give up!