18th January 2007 11:19
Q: I used an OPK, my timing was perfect, why didn't I get pregnant?
A: It often takes a number of perfectly timed cycles before pregnancy is achieved. The chances of getting pregnant each cycle varies a bit with age. If you are 20-25, your chance per cycle are about 25%. From there they begin to fall off. At 25-30 your chances are about 20%. At 30-35 they are about 15%. After 35 they may be about 10% per ovulatory cycle, and the chances continue the downward trend.
This means that the average woman under 30 will get pregnant within 6 cycles. If you don't succeed after a year, it is a good idea to consult a fertility specialist. Women in their early 30s get pregnant on average by the end of 9 cycles. Mid-30s would be a year. If you are over 35, you should consult a fertility specialist if you have not achieved pregnancy within 6 months. Why 6 months when it can take a year? Because your chances of conception are lower and miscarriage rates are higher -- it is better not to waste time.