Ther are methods which acuurately tell you when you have ovulated .Look it up . Also most women feel pain on the side corresponding to which ovary released an egg.i ovulate regularly even though I live in a big city . My college classmates managed to avoid pregnancy and if you can't don't expect other people to pay for your sexual activities . It is infantile to trust men to take responsibility for birth control . If you choose to have sex, you need to take responsibility .