What did I do wrong?

Me and my hubby are TTC for almost 2 years now. In the beginning we didn't didn't really try to get pregnant but we didn't use any protection and didn't stress about it. After a year I start worring that something is not right that I'm not pregnant so I went to the doctor. After that we both had lots of different tests which came back normal. We are both healthy. I thought that we just not aiming for the perfect moment. We decided to do everything we can to increase our chances and after my last period in October I have started using the Clear Blue Digital ovulation tests. During my fertile period we had sex every other day and the day before it showed I'm ovulating. I was full of hope that this time I will get pregnant but today I got my period :(. What did I  do wrong?