After walking, or jogging for a bit, either both or usually my left ovary starts hurting, or i suspect it's my ovaries.

Unlikely: You have lower abdominal pain but it is highly unlikely to have anything to do with your ovaries. It is good that you are exercising. If you can keep exercising through the pain, keep doing it. If not, it would be prudent to see a doctor for an evaluation. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine.