I usually ovulate between 18-22 with cycles that are about 30-35 days long. I asked my doc about it and he said 28-35 days was the norm for a cycle. He also said that all women are different and some people have longer than normal cycles, but that you know what is normal for your body. He said as long as you are regular and you have good pap tests, you shouldn't worry. As long as your OB doesn't think there is a problem, I wouldn't worry too much. I haven't TTC yet, but I'm not expecting it to be a problem. I hope this helps!