No. It is a very common myth, which often makes it difficult for couples to conceive. Ovulation occurs on the 14th day of the cycle only if the cycle lasts about 28 days. In practice, many women have much longer or shorter cycles. That's why it's important to remember that ovulation takes place, on average, about 14 days BEFORE the next menstruation. It's related to the length of the luteal phase (read more: What is the luteal phase?), which lasts between 10 and 16 days, or 12 to 14 days on average. For example, if your cycle usually lasts 35 days, then ovulation takes place around the 21st day of your cycle. However, if your cycle is shorter, say 24 days long, then ovulation will most likely occur around the 10th day of your cycle.
Of course, these are only estimates. If you want to know when and if ovulation takes place and when your fertile days are, you should use more reliable methods, such as tracking your cycles in the OvuFriend ovulation calendar, or you can try USG monitoring.