I've been with my partner 18 months, and for the last 9 month we've been quite lax with contraception. While we're not actively ttc, it wouldn't be a terrible thing if we had a baby (we know we both want kids at some point in the near future, we live together, are planning to get married next year, both in secure jobs). I know it's not really sensible that we've not been using contraception, but as time goes on I have been worrying about my fertility. Part of me thinks perhaps we should start using contraception. However, I believe 12 months tends to be the point at which fertility investigations are done, so part of me thinks maybe we should just carry on not using protection for a bit longer and then do some investigating into fertility? I imagine in a year or two we will be wanting to actively try for a baby, and I wouldn't want to have to then 'waste' a year ttc before investigations when I already know that we may have fertility problems. I am not very regular with my periods and have already been tested for PCOS, which I dont have. My partner and I are both in our 20s