Maybe you are now experiencing erotic fantasies or got turned on by a certain book or movie. You can make sex with your spouse more exciting by using your desire with him. They say women as they get older get more into sex. I think it depends on how women think. Birth control pills are the main way for women.
Condoms are excellent for protection against catching a disease.
Birth control and condoms together work well. Timing your ovulation doesn't work well because sometimes you can miscalculate. Pulling out early is also not a good way. If you are not in a relationship with someone and you are having sex, then condoms are very good. Not every woman has an identifiable G-spot.