Pregnancy success rates vary from each individual. Some can have a successful pregnancy as often as they want while others experience a very low percentage. There are even people who are having a hard time getting pregnant. And for these kinds of people, having an aid to make it possible is always the last resort. They tend to look for tips on how to make it happen. Finding out the best positions during intercourse and the timing is a vital factor. Good positioning can be easy to attain. However, precision and timing is what makes it hard for them. One good way of finding out when is the best time to engage in an intercourse is to calculate ovulation. It will help everyone especially those people who are having a hard time by giving them an idea if the woman is ovulating so as to make it possible for her to get pregnant.