Most women ovulate around day 14 of their cycle, so roughly around a week after their period ends. However, if you have a shorter cycle, then you will ovulate earlier. For some women, this can happen shortly after their period finishes.  The best thing you can do is to start tracking your cycle using an app. After a few months you will hopefully be able to get an idea of how long your cycles are and when you tend to ovulate. Just remember, nothing is set in stone. Even those with the most regular cycles can still have an odd month where they ovulate much earlier or later than expected.