Thanks for that great link Kay. I've read somewhere that you're at your most fertile on the 15th day after your period - counting from the first day that you got your menses. Let's say you got your menses on 1st of November, then you're most fertile on the 15th of November. I don't know how true that is but with the fertility calculator, we'll have another tool to confirm this.

Guess what? I just tried the fertility calculator and using menstrual cycle of 28 days, it calculated the same date as the one I mentioned above using the 15th day from your first day of your last menstrual period.

So this confirms that the fertility calculator really works! This will give me a better chance of getting pregnant when the time comes.